Class 5 – Page 2 – Maharashtra Board Solutions

Family Values Class 5 Questions And Answers EVS Chapter 5 Maharashtra Board

January 10, 2025January 9, 2025 by Bhagya

Balbharti Maharashtra State Board Class 5 Environmental Studies Solutions Chapter 5 Family Values Notes, Textbook Exercise Important Questions and Answers.

5th Standard EVS 1 Lesson Number 5 Question Answer Family Values Maharashtra Board

Std 5 EVS 1 Chapter 5 Question Answer

1. Fill in the blanks with the correct answers from the options given below:

Question (a)
Honesty is our ……………… .
(a) policy
(b) strength
(c) unity
Answer:
(b) strength

Question (b)
Everyone needs ………………. in public life.
(a) seperation
(b) recognition
(c) co-operation
Answer:
(c) co-operation

Question (c)
…………………… has a significance in our country.
(a) Tolerance
(b) Honesty
(c) Truthfulness
Answer:
(a) Tolerance

Question (d)
By developing a sense of equality everyone gets to ………………..
(a) learn
(b) play
(c) study
Answer:
(a) learn

2. Answer in one sentence:

Question (a)
Who should make decisions regarding changes in our environment?
Answer:
The government should make decisions regarding changes in our environment.

Question (b)
What is toerance?
Answer:
Respecting opinions which are different from our own is called tolerance or broadmindedness.

Question (c)
What is gender equality?
Answer:
Considering boys and girls to be equal without discrimination is called gender equality.

Question (d)
What are the common needs of men and women?
Answer:
Food, clothing, shelter, health and education are the common needs of men and women.

3. Answer in short:

Question (a)
How do you take part in the decision-making process in the family?
Answer:
To make any decision in the family
1. Talk to each other before making decisions about anything in the house.
2. Consult each other and make decisions that everyone agrees with.

Question (b)
How do we develop a sense of tolerance?
Answer:
1. Sometimes, there are disagreements between friends.
2. We must try to understand the point of view of others without insisting that our view is correct.
3. We must listen to other persons.
4. In this way, we learn to be tolerant.

Environmental Studies Part 1 Standard 5th Solutions Chapter 5 Family Values Additional Important Questions and Answers

Fill in the blanks with the correct answers from the options given below:

Question 1.
In newspapers, we read about matters requiring …………………… participation.
(a) human
(b) public
(c) leaders
Answer:
(b) public

Question 2.
If we are dishonest, we lose our
(a) self-confidence
(b) respect
(c) fame
Answer:
(a) self-confidence

Question 3.
Honesty is the best way to increase ………………. and in public life.
(a) discipline
(b) tolerance
(c) efficiency
Answer:
(a) discipline

Question 4.
Diversity can be preserved through …………………. .
(a) discipline
(b) tolerance
(c) efficiency
Answer:
(b) tolerance

Question 5.
We live together in a …………………….. .
(a) city
(b) family
(c) village
Answer:
(b) family

Question 6.
Just as we have a role in making decisions in our family, we also have a role in …………….. decision making.
(a) public
(b) private
(c) family
Answer:
(a) public

Question 7.
The government we elect makes decisions regarding ……………….. matters.
(a) personal
(b) public
(c) private
Answer:
(a) public

Question 8.
If we feel that a decision made by the government is wrong, we can register our
(a) phone number
(b) opinion
(c) photographs
Answer:
(b) opinion

Question 9.
When we realise that we have made a mistake, we should …………………. about it openly with our friends and family.
(a) play
(b) discuss
(c) talk
Answer:
(c) talk

Question 10.
It is necessary to be honest and sincere in our …………………… .
(a) work
(b) team
(c) class
Answer:
(a) work

Question 11.
We must try hard to keep the ………………….. in any relationship and never cheat.
(a) friendship
(b) network
(c) trust
Answer:
(c) trust

Question 12.
We must be honest at home as well as in ……………… .
(a) class
(b) public
(c) playground
Answer:
(b) public

Question 13.
Every one ……………….. an honest person.
(a) salutes
(b) bows
(c) respects
Answer:
(c) respects

Question 14.
Respecting opinions which are different from our own is called ………………….. or broadmindedness.
(a) tolerance
(b) narrow-mindedness
(c) selfish
Answer:
(a) tolerance

Question 15.
People from various religions, creeds, cultures and following different …………………… lives in our country.
(a) creed
(b) religion
(c) custom
Answer:
(c) customs

Question 16.
Diversity enriches our ……………… life.
(a) social
(b) school
(c) tution
Answer:
(a) social

Question 17.
We can solve problems in our ………………….. by being broadminded.
(a) environment
(b) homes
(c) school
Answer:
(a) environment

Question 18.
Considering boys and girls to be equal without discrimination is called ………………… equality.
(a) social
(b) gender
(c) economic
Answer:
(b) gender

Question 19.
Boys and girls must ………………… one another.
(a) respect
(b) fight
(c) socialise
Answer:
(a) respect

Question 20.
We must maintain this sense of …………………… as citizens when we grow up.
(a) justice
(b) equality
(c) honesty
Answer:
(b) equality

Question 21.
Men and women must get equal opportunities of ………………….. .
(a) work
(b) study
(c) progress
Answer:
(c) progress

Match the following:

Question 1.
Match the following:

‘A’	‘B’
1. Use public transport	(a) Common need
2. Respecting opinions	(b) Preserve diversity
3. Food	(c) Buy a ticket
4. Tolerant attitude	(d) Tolerance

Answer:

‘A’	‘B’
1. Use public transport	(c) Buy a ticket
2. Respecting opinions	(d) Tolerance
3. Food	(a) Common need
4. Tolerant attitude	(b) Preserve diversity

Question 2.
Say whether the following statements are true or false:

We feel we are an important part of the family when we see that our opinions are valued.
Fair and rallies6 can only be arranged successfully if we co-operate with one another.
The feeling of co-operation is restricted to only sports.
Tolerance has a special significance in our country.
Honesty decreases efficiency in public life.

Answer:

True
True
False
True
False

Answer in one sentence:

Question 1.
Which qualities make our community life harmonious and peaceful?
Answer:
Tolerance and cooperation makes our community life harmonious and peaceful.

Question 2.
What happens when all citizens are honest in their public life?
Answer:
If all citizens are honest in their public life, then we will get better public services and facilities.

Question 3.
It is necessary for everyone to be tolerant.
Answer:
1. Tolerance has a special significance in our country.
2. People from various religions, creeds, cultures and following different customs live here.
3. Therefore, it is necessary for everyone to be tolerant.

Answer in short:

Question 1.
How can we be a part of the decision making process of our country?
Answer:
1. The government we elect makes decisions regarding public matters.
2. If we feel that a decision made by the government is wrong, we can register our opinion.
3. In this way, we can be a part of the decision-making process.

Question 2.
What happens when everyone has a role in decision making?
Answer:
1. Each person gets the opportunity to say what they think.
2. By asking everyone’s opinion, the subject is thoroughly discussed from every aspect.
3. We feel we are an important part of the family when we see that our opinions are valued.

Question 3.
How can we learn to be honest?
Answer:
1. Sometimes we make mistakes.
2. When we realise that we have made a mistake, we should talk about it openly with our friends and family.
3. By doing this, we learn to be honest and find a way to correct our mistake.

Question 4.
Men and women should get equal opportunity. Explain.
Answer:
1. Food, clothing, shelter, health and education are the common needs of men and women.
2. For the purpose of equality, each of these needs must be fulfilled.
3. Men and women have equal right to these facilities such as these and by developing this sense of equality, everyone gets to learn and make progress.
4. Therefore men and women must get equal opportunities of progress.

Write short notes on:

Question 1.
Effects of honesty:
Answer:
The effects of honesty are as follows :

To gain trust in any relationship.
Not to be afraid.
Gain self-confidence.
Everyone respects an honest person.

What is the solution?

Question 1.
We meet a boy who has lost his way.
Answer:
(a) Ask for his address and guide him home.
OR
(b) Ask for his parents’ telephone number and try to contact them.
OR
(c) If he is unable to give address or telephone number then take him to the nearest police station for assistance.

Question 2.
While on a trip, we realise that our friend has forgotten her tiffin at home.
Answer:
We will share our tiffin with our friend without any hesitation.

Question 3.
Some people are stuck in the lift of a building.
Answer:
We will ask for help from the building people and call the watchman to rescue13 the people stuck in the lift.

Question 4.
In some homes, boys’ uniforms, textbook and bags are bought first. Purchase for girls are put off.
Answer:
This shows the family shows discrimination between boys and girls. We must counsel the parents to treat boys and girls equally.

Question 5.
When his team lost a Kabaddi match, Raju began to cry. Dinesh said, “Why are you crying like a girl?”
Answer:
This shows Dinesh thinks that only girls cry which is wrong, he should be told that happy and sad feelings are expressed by both girls and boys.

Question 6.
Vandana likes the bat and ball a lot. However, she is given dolls and toy stoves and utensils to play ‘house’.
Answer:
Vandana should express her desire to her parents that she likes cricket and cricket is a game which both boys and girls like.

Question 7.
Sarika helps her mother with the cooking and household chores. Her brother is never asked to do the same.
Ans.
Sarika’s parents should encourage Sarika’s brother also to do the household chores, with this he will learn the dignity14 of labour and learn to co-operate in household affairs. He will learn not to differentiate between ‘girl’s work’ and ‘boys work’.

Can you tell?

Question 1.
Which of the children show honest behaviour?
(a) Afreen borrowed a pencil from Meenu. After she finished using it, she returned it.
(b) Shama fell from her bicycle. However, she told her mother, “Neha pushed me off the bicycle.”
(c) Mary took the bag she found in a rickshaw to a police station.
Answer:
Afreen and Mary have shown honest behaviour.

Class 5 Environmental Studies Questions and Answers:

Our Earth And Our Solar System Class 5 Questions And Answers EVS Chapter 1 Maharashtra Board

January 10, 2025January 9, 2025 by sachin

Balbharti Maharashtra State Board Class 5 Environmental Studies Solutions Chapter 1 Our Earth and Our Solar System Notes, Textbook Exercise Important Questions and Answers.

5th Standard EVS 1 Lesson Number 1 Question Answer Our Earth And Our Solar System Maharashtra Board

Std 5 EVS 1 Chapter 1 Question Answer

1. What’s the solution?

Question 1.
What’s the solution?
One of the asteroids have fallen out of its place in the asteroid belt and is hurling towards the sun. Our earth is in its way and there is all likelihood of a collision. What can be done to prevent this collision?
Answer:
Use the shock wave to deflect it away from earth. Which means attach three large remote controlled rockets to the asteroid turning it into a large space vehicle and move it away from a dangerous collision.

2. Use your Brain Power:

Question 1.
What will happen to our solar system if the sun were to suddenly disappear?
Answer:
1. If the sun were to suddenly disappear all life forms on earth will cease, because the sun is a source of light and heat.
2. There will be complete darkness on all planets.
3. The planets will move from their orbits and may clash against each other.

Question 2.
Suppose you want to give your address to a friend you have on the planet mars. How will you write your address if you want them to understand exactly where you live?

3. Look at the picture of the solar system and answer the following questions:

Maharashtra Board Class 5 EVS Solutions Part 1 Chapter 1 Our Earth and Our Solar System 1
Question (a)
Which planet is nearest to the Sun?
Answer:
Mercury

Question (b)
At what position is the earth from the Sun?
Answer:
Third

Question (c)
Which planet is placed between the earth and mercury?
Answer:
Venus

Question (d)
Name the planets beyond the orbit of Mars in serial order.
Answer:
Jupiter, Saturn, Uranus and Neptune.

Question (e)
Which planet in the Solar System is furthest from the sun?
Answer:
Neptune

4. Who am I?

Question (a)
You can see me from the earth but the lighted part of me that you see changes every day.
Answer:
The moon.

Question (b)
I have my own light. It is only from me that the planets get light and heat.
Answer:
The sun.

Question (c)
I turn around myself, around a planet and also around a star.
Answer:
Satellite.

Question (d)
I turn around myself and revolve around the Sun.
Answer:
Planet.

Question (e)
No other planet has a living world like mine.
Answer:
Earth.

Question (f)
I am the nearest star to the earth.
Answer:
The sun.

Question (a)
For what purpose are rockets used in space travel?
Answer:
1. Very powerful rockets are used to send a spacecraft into space.
2. A tremendous quantity of fuel is burnt in rockets so that spacecraft weighing thousands of tons may be launched into space.

Question (b)
What information do man-made satellites provide?
Answer:
1. Man made satellites provide useful information on agriculture, environment, weather, forecasting, making maps and searching for water and mineral wealth on the earth.
2. It is also used for telecommunication.

Environmental Studies Part 1 Standard 5th Solutions Chapter 1 Our Earth and Our Solar System Additional Important Questions and Answers

Fill in the blanks with the correct answers from the options given below:

Question 1.
The heavenly bodies that twinkle are called ……………………. .
(a) earth
(b) moon
(c) stars
Answer:
(c) Stars

Question 2.
Satellites and planets get their light from the ……………….. .
(a) asteroids
(b) pluto
(c) sun
Answer:
(c) sun

Question 3.
The heavenly body closest to the earth is ………………. .
(a) sun
(b) moon
(c) mercury
Answer:
(b) moon

Question 4.
…………………….. is an important Indian space mission on Mars.
(a) Chandrayaan -1
(b) Mangalyaan
(c) Marsyaan
Answer:
(b) Mangalyaan

Question 5.
Scientists who travel in the spacecraft are called ……………….. .
(a) astronauts
(b) researchers
(c) engineers
Answer:
(a) astronauts

Question 6.
…………………. became the first Indian astonaut to go in space.
(a) Kalpana Chaivla
(b) Rakesh Sharma
(c) Sunita Williams
Answer:
(b) Rakesh Sharma

Question 7.
………………….. have their own light.
(a) Stars
(b) Planets
(c) Asteroids
Answer:
(a) Stars

Question 8.
The Sun is a …………………. .
(a) planet
(b) star
(c) satellite
Answer:
(b) star

Question 9.
The heavenly bodies that do not twinkle are called ………………. .
(a) planets
(b) stars
(c) rockets
Answer:
(a) planets

Question 10.
………………… do not have their own light.
(a) stars
(b) planets
(c) bulbs
Answer:
(b) planets

Question 11.
Plants get their light from the …………………… .
(a) rockets
(b) asteroids
(c) stars
(d) sun
Answer:
(c) stars

Question 12.
Our earth is a ………………….. .
(a) satellite
(b) moon
(c) planet
Answer:
(c) planet

Question 13.
The earth’s movement around the sun is called the ………………. of the earth.
(a) revolution
(b) rotation
(c) motion
Answer:
(a) revolution

Question 14.
Besides earth, there are ……………. other planets which revolves around the sun.
(a) two
(b) one
(c) seven
Answer:
(c) seven

Question 15.
The pathway along which the planets move around the sun is known as the planet’s
(a) track
(b) orbit
(c) asteroid
Answer:
(b) orbit

Question 16.
The sun and the planets that revolve around it are together called the ………………. system.
(a) satellite
(b) solar
(c) universal
Answer:
(b) solar

Question 17.
Some heavenly bodies that revolve around the planets are called ……………….. .
(a) sun
(b) moon
(c) satellites
Answer:
(c) satellites

Question 18.
The ………………….. revolves around the earth.
(a) sun
(b) moon
(c) planets
Answer:
(b) moon

Question 19.
The moon is the satellite of the ………………….. .
(a) Mars
(b) Saturn
(c) Earth
Answer:
(c) Earth

Question 20.
The planets revolve around the …………….. along with its satellites.
(a) earth
(b) sun
(c) solar system
Answer:
(b) sun

Question 21.
……………….. is a well-known dwarf planet.
(a) Pluto
(b) Jupiter
(c) Saturn
Answer:
(a) Pluto

Question 22.
Asteroids also ………………. around the sun.
(a) rotate
(b) move
(c) revolve
Answer:
(c) revolve

Question 23.
Due to the earth’s ………………….. all things on the earth remain on it.
(a) gravity
(b) rotation
(c) revolution
Answer:
(a) gravity

Question 24.
Very powerful rockets are used to send a spacecraft into ………………. .
(a) planets
(b) asteroids
(c) space
Answer:
(c) space

Question 25.
Our country is well-known for the development of its ……………… launch technology.
(a) Space
(b) Astronaut
(c) Asteroids
Answer:
(a) Space

Question 26.
Scientists who travel in spacecraft are called
(a) astronauts
(b) asteroids
(c) rockets
Answer:
(a) astronauts

What is the full form of:

Question 1.
M. O. M.
Answer:
Mars Orbit Mission

Question 2.
ISRO
Answer:
Indian Space Research Organisation

Question 3.
Match the following:

‘A’	‘B’
(1) Rakesh Sharma went to space	(a) 2008
(2) Chandrayaan I launched	(b) 2014
(3) MOM launched in space	(c) 1984
(4) MOM established in an orbit	(d) 2013

Answer:

‘A’	‘B’
(1) Rakesh Sharma went to space	(c) 1984
(2) Chandrayaan I launched	(a) 2008
(3) MOM launched in space	(b) 2014
(4) MOM established in an orbit	(d) 2013

Name the following:

Question 1.
Two heavenly bodies.
Answer:
The sun and the moon.

Question 2.
Planets in the solar system.
Answer:
Mercury Venus, Earth, Mars, Jupiter/Saturn, Uranus and Neptune.

Question 3.
Heavenly bodies between Mars and Jupiter.
Answer:
Asteroids.

Question 4.
A dwarf planet.
Answer:
Pluto.

Question 5.
Technology that helps us to travel in space.
Answer:
Rocket technology or space launch technology.

Answer the following in one sentence:

Question 1.
What is the solar system?
Answer:
The sun and their planets, their satellites, dwarf planets and asteroids that revolve around the sun are together called the solar system.

Question 2.
What is known as planet’s orbit?
Answer:
Every planet in the solar system revolves around the sun along a specific path which is known as planet’s orbit.

Question 3.
What are satellites?
Answer:
Some heavenly bodies which revolves around the planets are called satellites.

Question 4.
What do you mean by the force of gravity?
Answer:
All heavenly bodies exert a force of attraction or a pull on one another, this is called the force of gravity.

Question 5.
What are heavenly bodies?
Answer:
The sun, the moon, the stars, the planets, etc. are all heavenly bodies.

Question 6.
What are stars?
Answer:
Heavenly bodies that twinkle are called stars.

Question 7.
Which star is closer than any other star?
Answer:
The sun is the star that is closest to us.

Question 8.
What are planets?
Answer:
Heavenly bodies that do not twinkle are called planets.

Question 9.
What are the two movements of a planet?
Answer:
Planets revolve around a star, even as they rotate around themselves.

Question 10.
What is the revolution of the earth?
Answer:
The movement of the earth around the sun is called the revolution of the earth.

Question 11.
How many planets are there in our solar system?
Answer:
Our solar system has eight planets.

Question 12.
Name the planets of our solar system.
Answer:
The planets of our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Question 13.
Which is the satellite of the Earth?
Answer:
The moon is the satellite of the earth.

Question 14.
What are dwarf planets?
Answer:
Some smaller heavenly bodies that revolve around the sun are called dwarf planets.

Question 15.
Which dwarf planet is well-known?
Answer:
Pluto is a well known dwarf planet.

Question 16.
What are Asteroids?
Answer:
A band of numerous small heavenly bodies are called Asteroids.

Question 17.
Where are the Asteroids situated?
Answer:
The Asteroids are situated between the planets Mars and Jupiter.

Question 18.
Why do all the things on the earth remain on it?
Answer:
All things on earth remain on it, due to the earth’s gravity.

Question 19.
How do we send some object to space?
Answer:
To send some object from earth to space, it must be given power against the force of gravity.

Question 20.
Which technology is used to send objects into space?
Answer:
Rocket technology or space launch technology is used to send objects into space.

Question 21.
What are used to send a spacecraft into space?
Answer:
Very powerful rockets are used to send a spacecraft into space.

Question 22.
What is our country well-known for?
Answer:
Our country is well-known for the development of its space launch technology.

Question 23.
Who are astronauts?
Answer:
Some scientists who travel in spacecraft are known as astronauts.

Question 24.
Who was the first Indian astronaut to go into space?
Answer:
Rakesh Sharma was the first Indian astronaut to go into space in 1984.

Question 25.
Name two astronauts of Indian origin.
Answer:
Kalpana Chawla and Sunita Williams are two astronauts with Indian origin.

Give geographical reasons:

Question 1.
During the day we cannot see other stars, besides the Sun.
Answer:
1. The sun is a star.
2. It is closer to us than any other star.
3. It appears big and brilliant.
4. Therefore, due to its bright light during the day, we cannot see other stars.

Question 2.
The moon is called a satellite of the earth.
Answer:
1. We see the moon at night.
2. It revolves around the earth.
3. Therefore, it is called a satellite of the earth.

Question 3.
Our Earth is an invaluable planet.
Answer:
1. Space scientists have not yet been able to find a single other planet which has life on it.
2. Therefore, our planet is an invaluable planet.

Question 4.
Though the sun is a star it does not twinkle.
Answer:
1. The sun is a star and it is closer to us than any of the stars.
2. Hence, it appears big and brilliant and does not twinkle like the distant stars.

Question 5.
The moon appears to be very big.
Answer:
1. Compared to the sun, the other heavenly bodies in the solar system are much smaller.
2. As the moon is closest to the earth, it appears to be very big although it is actually very much smaller than the sun.

Question 6.
Satellites revolve around their planets.
Answer:
1. The sun exerts a gravitational pull on all planets whereas the tendency of the planets is to move away from the sun.
2. As a result of these two forces, a planet keeps revolving around the sun at fixed distance, in a fixed orbit.
3. In this way the satellites revolve around their planets.

Question 7.
Even if we throw something upward with a great force, it finally falls to the ground.
Answer:
1. All things on the earth remain on it due to the earth’s gravity.
2. So, even if we throw something upward with a great force, it finally falls back to the ground.

Answer briefly:

Question 1.
What happens to the spacecrafts after the mission is over?
Answer:
1. Some spacecraft remain in space.
2. Others are brought back to earth.
3. Some land on other planets or satellites after the mission is complete.

Question 2.
Describe Rakesh Sharma’s mission to space.
Answer:
1. Rakesh Sharma became the first Indian astronaut to go into space in 1984.
2. He spent eight days.
3. It was a joint mission of the ISRO and the Soviet Intercosmos.
4. Seeing India from space, he said it looked: ‘Saare jahan se achha’.

Question 3.
How are spacecraft launched into space?
Answer:
1. Very powerful rockets are used to send a spacecraft into space.
2. A tremendous quantity of fuel is burnt in these rockets so that the spacecraft weighing thousands of tons may be launched into space.

Question 4.
What are the uses of man-made satellites?
Answer:
1. Man-made satellites provide useful information for agriculture, environment, weather forecasting, map making and searching for water and mineral wealth on the earth.
2. They are also used for telecommunication.

Write short note on:

Question 1.
Dwarf planets
Answer:
1. Dwarf planets are smaller heavenly bodies that revolve around the sun.
2. The most well known is Pluto.
3. They revolve around the sun independently.
4. They have their own orbit.

Question 2.
Asteriods
Answer:
1. Small heavenly bodies between the planets Mars and Jupiter are called asteroids.
2. They move in a form of a band and are numerous.
3. They revolve around the sun.

Question 3.
Distinguish between stars and planets:
Answer:

Stars	Planets
(a) Stars twinkle.	(a) Planets do not twinkle.
(b) Stars have their own light.	(b) Planets do not have their own light.
(c) For e.g. The sun.	(c) For e.g. The earth.

Question 4.
Give details of Mangalyaan on the basis of the following points:
(a) Another name of Mangalyaan,
(b) Date of launch,
(c) Date of orbiting,
(d) Attempts made to achieve success,
(e) Type of mission,
(f) Objective of the mission.
Answer:
(a) Mass Orbit Mission
(b) 5 November 2013
(c) 24 September 2014
(d) one
(e) unmanned
(f) Deeper study of the moon and mass.

Question 5.
Through your observation:
In which direction do leaves from a tree, rocks from a hillside or rain from the sky fall?
Answer:
Due to earth’s gravity all things fall down to the ground.

Glossary:

heavenly – cosmic/celestial.
dwarf – small and insignificant in comparison
gravity – force that attracts a body towards the centre of the earth.
tremendous – very great in amount, scale or intensity.
disappear – create to be visible/cease to exist.

Class 5 Environmental Studies Questions and Answers:

The Environment and Us Class 5 Questions And Answers EVS Chapter 18 Maharashtra Board

January 10, 2025January 9, 2025 by Bhagya

Balbharti Maharashtra State Board Class 5 Environmental Studies Solutions Chapter 18 The Environment and Us Notes, Textbook Exercise Important Questions and Answers.

5th Standard EVS 1 Lesson Number 18 Question Answer The Environment and Us Maharashtra Board

Std 5 EVS 1 Chapter 18 Question Answer

1. What’s the solution?

Question 1.
Rivers and lakes are filled with water hyacinth.
Answer:
Water hyacinth are formed in rivers and lakes due to pollution. That is mainly due to mixture of detergents in the water. To control it the water hyacinth should be removed and waste water from households or washing clothes in water should be banned.

2. Use your brain power!

Question 1.
What would happen if no kites (birds) are left in a particular region? Which living things would increase in number? Which would decrease?
Answer:
If no kites are left in a particular region the number of birds, amphibian, small mammals and earthworms would increase.

3. Answer the following questions.

Question (a)
What is meant by migration?
Answer:
Movement from one place to another for a short period of time or permanently is called migration.

Question (b)
Describe the life cycle of birds.
Answer:
Birds lay eggs. The eggs are hatched and after a few days, the small birds come out. They grow up in the nest. After three-four weeks they become an adult bird and start laying eggs.

Question (c)
Give two causes of air pollution.
Answer:
The two causes of air pollution are as follows:
1. Fuels are burnt in vehicles, give out certain poisonous gas and smoke.
2. Industries let out some poisonous gases into the air.

Question (d)
For what purpose do we use land obtained by clearing forests?
Answer:
We use land for agriculture, housing, industry and for building roads and railways by clearing forest.

4. Give reasons:

Question (a)
It is important to conserve the living components of the environment.
Answer:
It is important to conserve the living components of the environment because:

Due to human intervention in nature the non living components are getting polluted.
So the living things are threatened.
Several living things have already become extinct.
If one factor of the environment is damaged, it disturbs environmental balance.
The process of extinction is increasingly fast.
This will be a threat to the whole living world.

Question (b)
The numbers of wild animals are falling day by day.
Answer:

Forests have been cut down to make place for various reasons of man’s need.
Forest provide shelter and food to the wild animals.
If the plants on the earth are destroyed the number of animals also fall day by day.
Because of hunting, the population of wild animals is falling.

5. True or False:

Question (a)
Dead plants and animals are a biotic components.
Answer:
False

Question (b)
It is necessary to conserve biodiversity.
Answer:
True

6. Classify the following as natural or man-made:

Question 1.
Classify the following as natural or man-made:
Soil, horse, stone, water hyacinth, book, sunlight, dolphin, pen, chair, water, cottonwool, table, trees, brick.
Answer:
Natural – horse, water hyacinth, sunlight, dolphin, water, trees, cottonwool.
Manmade – soil, stone, book, pen, chair, table, brick.

Environmental Studies Part 1 Standard 5th Solutions Chapter 18 The Environment and Us Additional Important Questions and Answers

Fill in the blanks with the correct answers from the options given below:

Question 1.
The population of the world is now close to hundred crore.
(a) four
(b) five
(c) six
Answer:
(c) six

Question 2.
Tremendous quantities of ………………… enter the air due to burning of fuels.
(a) oxygen
(b) nitrogen
(c) carban dioxide
Answer:
(c) carban dioxide

Question 3.
The ………………….. sanctuary is known for bisons.
(a) Radhanagari
(b) Tadoba
(c) Kaziranga
Answer:
(a) Radhanagari

Question 4.
…………………… state has declared the Nannaj area a sanctuary for the Great Indian Bustard.
(a) Maharashtra
(b) Madhya Pradesh
(c) Meghalaya
Answer:
(a) Maharashtra

Question 5.
In Madhya Pradesh, Devrais are known as ………….. .
(a) Devran
(b) Sharanvan
(c) Sharanrais
Answer:
(b) Sharanvan

Question 6.
Masrhy or low-lying areas are filled to …………….. the land.
(a) rebuild
(b) reclaim
(c) restore
Answer:
(b) reclaim

Question 7.
There are many types of ……………….. in forests.
(a) plants
(b) rivers
(c) dams
Answer:
(a) plants

Question 8.
Birds build their nests in ………………. .
(a) shrubs
(b) bushes
(c) trees
Answer:
(c) trees

Question 9.
Water sources get ……………… if waste water is let into them without processing.
(a) polluted
(b) clogged
(c) depleted
Answer:
(a) polluted

Question 10.
……………… water is also given out from factories into their surroundings.
(a) Waste
(b) Running
(c) Stagnant
Answer:
(a) Waste

Question 11.
If water from such polluted sources keeps soaking into the soil, it becomes ……………….. .
(a) fertile
(b) infertile
(c) marshy
Answer:
(b) infertile

Question 12.
Chemical fertilizers and pesticides are used on a large scale for ………………. .
(a) Horticulture
(b) Vermiculture
(c) Agriculture
Answer:
(c) Agriculture

Question 13.
…………………. is used in all homes.
(a) Fuel
(b) Coal
(c) Kerosene
Answer:
(a) Fuel

Question 14.
There are big industries and factories in which ……………… is used in great quantities.
(a) water
(b) smoke
(c) fuel
Answer:
(c) fuel

Question 15.
When the proportion of carbon dioxide in the air rises, it leads to rise in ………………….. .
(a) rain
(b) temperature
(c) pollution
Answer:
(b) temperature

Question 16.
When fuels are burnt in vehicles, they give out certain ……………… gases as well as smoke.
(a) poisonous
(b) polluted
(c) natural
Answer:
(a) poisonous

Question 17.
Industries also let out some ……………….. gases into the air.
(a) poisonous
(b) polluted
(c) natural
Answer:
(a) poisonous

Question 18.
Due to human ……………………. in nature, large scale changes are taking place in air, water and land.
(a) interval
(b) intervention
(c) invention
Answer:
(b) intervention

Question 19.
From time to time, some of the living things on the earth become ………………. .
(a) strong
(b) weak
(c) extinct
Answer:
(c) extinct

Question 20.
Food, water and clothes are the …………….. of all people.
(a) basics
(b) needs
(c) pollution
Answer:
(b) needs

Question 21.
We need to take steps to prevent the …………………. of the environment.
(a) degradation
(b) pollution
(c) conservation
Answer:
(a) degradation

Question 22.
Let us all ensure that no action on our part will cause ……………….. or cause harm to living things.
(a) conservation
(b) intervention
(c) pollution
Answer:
(c) pollution

Question 23.
Let us make all possible efforts for the …………………. of the living world.
(a) conservation
(b) degradation
(c) confrontation
Answer:
(a) conservation

Question 24.
Several projects are being implemented at the international level to …………………. the balance of nature.
(a) mountain
(b) maintain
(c) destroy
Answer:
(b) maintain

Question 25.
It is important to raise the awareness of people all over the world about the …………………. to environmental balance.
(a) threat
(b) reservation
(c) treat
Answer:
(a) threat

Question 26.
In ‘biodiversity park’, biodiversity is both preserved and ……………….. .
(a) memorized
(b) studied
(c) destroyed
Answer:
(b) studied

Question 27.
People visiting ‘biodiversity park’, enjoy being close to ……………….. .
(a) parks
(b) grass
(c) nature
Answer:
(c) nature

Question 28.
Some areas which are important for the protection and conservation of wild life are …………… for them.
(a) revered
(b) reserved
(c) protected
Answer:
(b) reserved

Question 29.
If the plants on the earth are destroyed the numbers of …………………….. also fall.
(a) humans
(b) trees
(c) animals
Answer:
(c) animals

Question 30.
If deforestation is stopped, and instead tree plantation is stepped up, animals that depend on plants will get protection and ……………………. .
(a) thrive
(b) threat
(c) deplete
Answer:
(a) thrive

Question 31.
………………… lake has formed due to a dam built on the Chand river in Satara district.
(a) Victoria
(b) Mayani
(c) Tulsi
Answer:
(b) Mayani

Question 32.
………………….. from the Siberia region in northern Asia migrate to this lake.
(a) Deer
(b) Bison
(c) Flamingos
Answer:
(c) Flamingos

Question 33.
Mayani lake has been declared a ………………… for birds.
(a) sanctuary
(b) conservatory
(c) threat
Answer:
(a) sanctuary

Question 34.
People believe that a Devrai is really a jungle reserved for ………………. .
(a) us
(b) god
(c) people
Answer:
(b) god

Question 35.
Devrais give ………………. not only to the plants but also to the animals that live there.
(a) shelter
(b) food
(c) clothing
Answer:
(a) shelter

Question 2.
State whether the following statements are True or False:

Pollution of water is a threat to aquatic plants and animals.
Nature provides enough for every man’s greed, but not for every man’s need.
The Maldhok is also called the Great Indian Bustard.
Marshy or low lying areas are filled to reclaim the land.
Man is also a part of nature.

Answer:

True
False
True
True
False

Name the following:

Question 1.
Two National Parks.
Answer:
Kaziranga National Park and Tadoba National Park.

Question 2.
Lake built on the Chand river in Satara.
Answer:
Mayani.

Question 3.
Birds which migrate to Asia from Siberia.
Answer:
Flamingo.

Question 4.
The biggest Maldhok sanctuary in Asia.
Answer:
Nannaj in Solapur district

Question 5.
State known for Devrais.
Answer:
Maharashtra

Question 6.
Village famous for peacock population
Answer:
Morachi Chincholi

Answer in one sentence:

Question 1.
What is a biodiversity park?
Answer:
An area which is reserved for the purpose of protecting and conserving the biodiversity of a region is called a biodiversity park.

Question 2.
What are national parks?
Answer:
Some areas reserved for the protection and conservation of wildlife are called national parks.

Question 3.
What is a sanctuary?
Answer:
Certain forest areas are reserved for the protection and conservation of a particular animal or plant. It is called a sanctuary.

Question 4.
What are Devrai?
Answer:
In Indian culture, people believe that a jungle is reserved for god which is known as Devrai.

Question 5.
Which trees are commonly looked after for birds in Morachi Chincholi?
Answer:
Tamarind trees are commonly looked after for birds in Morachi Chincholi.

Question 6.
What is the population of the world?
Answer:
The population of the world is now close to six hundred crore.

Question 7.
Why is man using up more and more land and water resources?
Answer:
Man is developing new technology to meet the needs of all the people, so man is using more and more land and water resources.

Question 8.
What happens if forests are reduced?
Answer:
If forests are reduced, biodiversity is also depleted.

Question 9.
How do water sources get polluted?
Answer:
Water sources get polluted if waste water is let into them without processing.

Question 10.
What happen when water from polluted sources keep soaking into the soil?
Answer:
If water from polluted sources keep soaking into the soil, the soil become infertile.

Question 11.
What happens when the proportion of carbon dioxide in the air rises?
Answer:
When the proportion of carbon dioxide in the air rises, it leads to rise in temperature.

Question 12.
How is the environmental balance disturbed?
Answer:
If one factor of the environment is damaged, its relationships with other factors also get affected. Thus the environmental balance is disturbed.

Question 13.
What steps can be taken to prevent the degradation of the environment?
Answer:
We must use our means frugally and recycle used articles, if every person practices this sincerely then we can prevent degradation of the environment.

Question 14.
What happens when deforestation is stopped and tree plantation is stepped up?
Answer:
If deforestation is stopped and instead tree plantation is stepped up, animals that depend on plants will get protection and thrive.

Question 15.
How is the Mayani lake helpful to migratory birds?
Answer:
Mayani lake homes flamingos from Siberia who migrate to this lake. Here they build nests, lay eggs and when the baby bird grows big enough they return with them to Siberia.

Question 16.
What steps has the Maharashtra State government taken to protect the Great Indian Bustard?
Answer:
Maharashtra State has declared the Nannaj area a sanctuary for Great Indian Bustard thus helping them from extinction.

Question 17.
The environment is being degraded rapidly.
Answer:
(a) Man fulfil his needs by using materials from environment.
(b) All the people in the world have similar needs and desires.
(c) So, the environment is being degraded rapidly.

Question 18.
Flamingos have stopped coming to Mayani Lake.
Answer:
1. Flamingos used to migrate from Silbeia to Mayani lake to build their nests and lay eggs.
2. In the recent past, the water level in the dam has fallen.
3. Therefore, the flamingos have stopped coming to Mayani lake.

Question 19.
The Indian Bustard are the farmers’ friend.
Answer:

The Indian Bustard live in open grasslands.
They feed on insects thus giving protection to crops in fields.
Therefore, they are the farmers’ friend.

Answer briefly:

Question 1.
Give two causes of water pollution.
Answer:
The two causes of water pollution are as follows:
1. Waste water given out from factories are let into water bodies without processing.
2. Chemical fertilizers and pesticides are used in agriculture which seep into the soil and finally flow into rivers with rainwater.

Can you tell?

(A) With the help of the questions below, explain what would happen if forests are cleared on a large scale.

Question 1.
Will water and food sources for living things grow or dwindle? Why?
Answer:
If forests are cleared the amount of rain will become less and the amount of food required will dwindle.

Question 2.
Will the living things look for shelters elsewhere or stay on? Why?
Answer:
The living things will look for shelter elsewhere if forest is cleared because forest is their home.

Question 3.
Will the space occupied by the plants and animals increase or decrease? Why?
Answer:
The space occupied by the plants and animals will decrease because forest that is cleared will be used for other purpose.

Question 4.
Will the number of living things increase or decrease? Why?
Answer:
The number of living things will decrease because forest provides food, shelter and water.

(B)

Question 1.
What could be the reasons of air pollution?
Answer:
The reasons of air pollution are increasing use of vehicles and growth of industries.

Question 2.
What are the different purposes for which fuels such as petrol, diesel, kerosene, natural gas, coal and wood are used?
Answer:
Petrol and diesel are used in vehicles. Kerosene is used in stoves. Natural gas is used for cooking. Coal and wood are used for burning.

Question (C)
You see a food chain in the picture above. One of the links is missing. What effect will it have on the grasshopper? On the bird? What picture should there be in the blank space? If this living thing really died out, what would be the threat to the entire living worlds? Discuss your answers in the class.
Maharashtra Board Class 5 EVS Solutions Part 1 Chapter 18 The Environment and Us 1
Answer:
Grass is missing. If grass is not there then the number of grasshoppers will become less or even become extinct. Birds will not get enough food and become less or may even extinct.

Glossary:

biodiversity -variety of plant and animal life in a particular habitat
deforestation – clearing/cutting of forests or trees.
depleted – reduced
frugally – sparingly
degradation – breaking down.
components – parts
intervention – interference
extinction – non-existence.
dwindle diminish gradually.

Class 5 Environmental Studies Questions and Answers:

Constituents of Food Class 5 Questions And Answers EVS Chapter 19 Maharashtra Board

January 10, 2025January 9, 2025 by Bhagya

Balbharti Maharashtra State Board Class 5 Environmental Studies Solutions Chapter 19 Constituents of Food Notes, Textbook Exercise Important Questions and Answers.

5th Standard EVS 1 Lesson Number 19 Question Answer Constituents of Food Maharashtra Board

Std 5 EVS 1 Chapter 19 Question Answer

1. What’s the solution?

Question 1.
The body requires adequate quantity of protein.
Answer:
To meet the requirement of protein necessary for our body, we should consume protein rich food. We should include foods like, eggs, meat, fish, pulses, beans and dairy products like cheese, milk, yoghurt etc. in our diet. Vegetarian people should include at least one cup (katon) of dal daily in their diet as that is the only source of protein in their diet.

2. Use your brain power!

Question 1.
Why are children told to drink milk everyday?
Answer:
Children are growing tall and hence their bones are also growing. Calcium is needed for strong bones. Hence children need to get large amounts of calcium, for proper growth of bones. Milk is a source of calcium which can supply the required amount of calcium necessary for growth of bones. Therefore children are told to drink milk everyday.

3. Give two sources of each of the following constituents:

Question 1.
Give two sources of each of the following constituents:
Answer:

Constituents	Examples of Sources of food
(a) Minerals	(1) Milk (2) Green leafy vegetables
(b) Proteins	(1) Egg (2) Pulses
(c) Starch	(1) Potato (2) Jowar

4. Fill in the blanks:

Question (a)
………………….. in our food give us the ability to resist diseases.
(a) proteins
(b) vitamins
(c) fats
Answer:
(b) vitamins

Question (b)
Calcium makes our bones …………………… .
(a) strong
(b) weak
(c) smooth
Answer:
(a) strong

Question (c)
Food stuff that taste sweet contain various kinds of ……………….. .
(a) sugars
(b) jaggery
(c) honey
Answer:
(a) sugars

Question (d)
A diet that provides all the constituents of food in the right proportions is called a …………….. diet.
(a) irregular
(b) regular
(c) balanced
Answer:
(c) balanced

5. Answer the following questions.

Question (a)
Of what use are the sugars that we get from the digestion of starch?
Answer:
The sugars obtained from digestion of starch bum slowly in our body and release energy which is necessary for doing various works.

Question (b)
Name the sources of fibre in our diet.
Answer:
Sources of fibres in our diet are cereals, like wheat, jowar, bajra etc. from which we make chapati or bhakari and all the fruits and vegetables that we eat.

Question (c)
What are carbohydrates?
Answer:
Constituents of food like starch, fibres and sugars that provide energy to our body are called carbohydrates.

Question (d)
What is meant by malnutrition?
Answer:
Our diet should supply various constituents like carbohydrates, proteins, fats, viatmins and minerals in the right proportion for proper nourishment and growth. If the diet taken lacks in some constituents over a long period of time, the person does not get proper nourishment. This leads to a condition called malnutrition . Malnutrition has serious consequence on health. Lack of sufficient quantities of proteins and carbohydrates lead to stunted growth.

6. Match the following:

Question 1.
Match the following:

Column ‘A’	Column ‘B’
1. Fats	(a) Jowar
2. Proteins	(b) Oil
3. Vitamins	(c) Bran of cereals
4. Minerals	(d) Pulses
5. Starchy foods	(e) Iron

Answer:

Column ‘A’	Column ‘B’
1. Fats	(b) Oil
2. Proteins	(d) Pulses
3. Vitamins	(c) Bran of cereals
4. Minerals	(e) Iron
5. Starchy foods	(a) Jowar

Environmental Studies Part 1 Standard 5th Solutions Chapter 19 Constituents of Food Additional Important Questions and Answers

Fill in the blanks with the correct answers from the options given below:

Question 1.
Starch turns blackish blue when it comes in contact with ………………… solution.
(a) sodium
(b) calcium
(c) iodine
Answer:
(c) iodine

Question 2.
Cereals like jowar, bajra, wheat, rice contain a lot of ………………. .
(a) starch
(b) protein
(c) vitamin
Answer:
(a) starch

Question 3.
When the starchy foods we eat are digested …………………. are formed.
(a) chocolate
(b) sugars
(c) fuel
Answer:
(b) sugars

Question 4.
Sugars formed by the digestion of starch act as ………………… of our body.
(a) strength
(b) fuel
(c) muscles
Answer:
(b) fuel

Question 5.
Fibre is also called …………………. .
(a) muscles
(b) fruits
(c) roughage
Answer:
(c) roughage

Question 6.
If our diet does not contain enough fibre, it can lead to ……………….. .
(a) constipation
(b) vomiting
(c) fever
Answer:
(a) constipation

Question 7.
……………… deposited under the skin prevents loss of heat from the body.
(a) Fats
(b) Oil
(c) Muscles
Answer:
(a) Fats

Question 8.
…………………. are known as the building blocks of our body.
(a) Vitamins
(b) Proteins
(c) Carbohydrates
Answer:
(b) Proteins

Question 9.
Night blindness is caused due to lack of …………………… .
(a) vitamin D
(b) vitamin A
(c) vitamin B
Answer:
(b) vitamin A

Question 10.
Deficiency of ……………….. leads to anaemia.
(a) calcium
(b) protein
(c) iron
Answer:
(c) iron

Question 11.
When a person does not get enough proteins and carbohydrates through their diet their growth is ………….. .
(a) increased
(b) decreased
(c) stunted
Answer:
(c) stunted

Question 12.
Sago and sweet potato contain …………………… .
(a) starch
(b) protein
(c) carbohydrates
Answer:
(a) starch

Question 13.
Cereals like jowar, bajra, wheat, rice contain a lot of ………………… .
(a) protein
(b) starch
(c) fuel
Answer:
(b) starch

Question 14.
We get …………………. from starchy foods.
(a) fuel
(b) energy
(c) sugar
Answer:
(b) energy

Question 15.
Our body uses energy for different kinds of …………………. .
(a) food
(b) fuel
(c) work
Answer:
(c) work

Question 16.
Wheat is ground into a ………………… .
(a) fuel
(b) paste
(c) flour
Answer:
(c) flour

Question 17.
Bran is a …………………. substance.
(a) fibrous
(b) starchy
(c) sticky
Answer:
(a) fibrous

Question 18.
In the process of digestion, fibre has a function.
(a) festive
(b) special
(c) delicious
Answer:
(b) special

Question 19.
……………………. helps to form stool from undigested food.
(a) Protein
(b) Sugar
(c) Fibre
Answer:
(c) Fibre

Question 20.
Oil is a ………………. substance.
(a) fatty
(b) sugary
(c) fibrous
Answer:
(a) fatty

Question 21.
Paper becomes ………………… when a fatty substance is applied to it.
(a) pulpy
(b) translucent
(c) sticky
Answer:
(b) translucent

Question 22.
Fats in our food provide ……………… to our body.
(a) energy
(b) starch
(c) sugar
Answer:
(a) energy

Question 23.
Fats give …………………. as much energy as carbohydrates.
(a) once
(b) twice
(c) thrice
Answer:
(b) twice

Question 24.
The fats we eat get …………………. in our body.
(a) used
(b) digested
(c) stored
Answer:
(c) stored

Question 25.
The ………………….. undergoes wear and tear continuously.
(a) body
(b) mind
(c) soul
Answer:
(a) body

Question 26.
Malnutrition has serious …………………. for the person’s health.
(a) essentials
(b) viruses
(c) consequences
Answer:
(c) consequences

Question (A)
Match the following:

Column ‘A’	Column ‘B’
1. Iron deficiency	(a) Weak and brittle bones
2. Calcium deficiency	(b) Malnutrition
3. Vitamin A deficiency	(c) Weak bones and teeth
4. Vitamin D deficiency	(d) Anaemia
5. Proteins and Carbohydrate deficiency	(e) Night blindness

Answer:

Column ‘A’	Column ‘B’
1. Iron deficiency	(d) Anaemia
2. Calcium deficiency	(c) Weak bones and teeth
3. Vitamin A deficiency	(e) Night blindness
4. Vitamin D deficiency	(a) Weak and brittle bones
5. Proteins and Carbohydrate deficiency	(b) Malnutrition

Question (B)
Match the following:

Column ‘A’	Column ‘B’
1. Constituent of food giving energy	(a) Iron
2. Costituent of food needed for repair	(b) Vitamins
3. Constituent of food proetcting internal organs	(c) Proteins
4. Constituents of food helping in resisting diseases	(d) Carbohydrates
5. Constituent of food necessary to supply enough oxygen	(e) Fats

Answer:

Column ‘A’	Column ‘B’
1. Constituent of food giving energy	(d) Carbohydrates
2. Costituent of food needed for repair	(c) Proteins
3. Constituent of food proetcting internal organs	(e) Fats
4. Constituents of food helping in resisting diseases	(b) Vitamins
5. Constituent of food necessary to supply enough oxygen	(a) Iron

Question 1.
Give two sources of each of the following constituents:
Answer:

Constituents	Examples of Sources of food
(a) Vitamin A	(1) Carrots (2) Papaya
(b) Calcium	(1) Milk, cheese (Dairy products) (2) brocoli (3) Leafy vegetables
(c) Fats	(1) Oils (2) Butter (3) Peanut
(d) Iron	(1) Meat (2) Spinach (palak)
(e) Vitamin C	(1) Lemon (2) Tomatoes (3) Sprouted pulses
(f) Sugars	(1) Fruits (2) Sugarcane
(g) Vitamin D	(1) Fish oil like (Cod liver oil) (2) egg yolk
(h) Vitamin B	(1) Nuts (2) Green leafy vegetables like spinach, broccoli etc. (3) cereals (wheat, millet)

Answer the following in one or two sentences:

Question 1.
How will you detect the presence of starch in food?
Answer:
The presence of starch in food is detected by adding iodine solution. If the food turns bluish black then starch is present.

Question 2.
What is a balanced diet?
Answer:
A diet which provides all the constituents like, protein, carbohydrates, fats, vitamins and minerals in right quantities is called a balanced diet.

Question 3.
Which food constituents are necessary for normal functioning of various processes in our body and help in maintaining resistance to diseases.
Answer:
Vitamins and minerals are the food constituents which are necessary for normal functioning of various processes in our body and help in maintaining resistance to diseases.

Question 4.
Why are proteins called building blocks of our body?
Answer:
Proteins help in healing and repairing of our body which undergoes wear and tear continuously and it also helps in building muscles. Therefore they are called building blocks of our body.

Question 5.
Which mineral in necessary for carrying oxygen to different parts of our body?
Answer:
Iron is necessary for carrying oxygen to different parts of our body.

Question 6.
Which minerals and vitamin help to make our bones strong?
Answer:
Vitamin D and the mineral calcium makes our bones strong.

Question 7.
What do we obtain from cereals?
Answer:
We obtain flour from cereals like jowar, bajra, wheat and rice.

Question 8.
What is the sugar obtined from jaggery and table sugar called?
Answer:
Sugar obtained from jaggery and table sugar is called sucrose.

Question 9.
How does fibrous substance help in our digestion?
Answer:
Fibrous substances help the food to move forward in the alimentary canal at the right speed.

Question 10.
How is carbohydrates useful to the body?
Answer:
The most important use of carbohydrates is to provide the body with energy.

Question 11.
What happens if our food does not contain enough fibre?
Answer:
If our food does not contain enough fibre it can lead to constipation.

Question 12.
What does paper becoming translucent signify?
Answer:
Paper becoming translucent is a sign of the presence of fats in the food stuff kept on it.

Question 13.
Which food item contain fats?
Answer:
Cream, butter, ghee, oil, nuts, meat, egg, yolk contain fats.

Question 14.
Why does our body store the fats we eat?
Answer:
Our body store the fats we eat because if sometimes food is not available then it can get energy from the stored fats.

Question 15.
Where does the body store fats?
Answer:
The body stores fats in a layer under the skin.

Question 16.
How does fats under the skin help us?
Answer:
The fats under the skin gives shape to the body and like a blanket prevents loss of heat from the body.

Question 17.
How are our internal organs protected?
Answer:
The layer of fat in the body protects our internal organs, that is why, an injury from outside does not at once cause damage to our bones or other internal organs.

Question 18.
Why is protein required in our body?
Answer:
The healing and repair of the tissues in our body goes on all the time without us being aware of it. Proteins are necessary for this process.

Question 19.
Which food stuff contains protein?
Answer:
All the different daals, pulses, groundnuts, milk and milk products like yoghurt, khoya, paneer, eggs, meat and fish are rich sources of proteins.

Question 20.
What are macronutrients?
Answer:
Our body requires carbohydrates, fats and proteins in large proportions. These food constituents are called macronutrients.

Question 21.
What are micronutrients?
Answer:
We need certain food constituents in very small quantities. These are called micronutrients, e.g. vitamins and minerals.

Question 22.
Which vitamins are most important vitamins?
Answer:
Vitamin A, B, C, D, E and K are the most important vitamins.

Question 23.
Why do we need vitamins in our body?
Answer:
We need very small quantities of vitamins in . our body as lack of or deficiency of any vitamin
results in serious disorders.

Question 24.
What does deficiency of vitamin ‘A’ lead to?
Answer:
Deficiency of vitamin A leads to night blindness.

Question 25.
What does deficiency of vitamin D lead to?
Answer:
Deficiency of vitamin D results in weak and brittle2 bones.

Question 26.
Which minerals are essential for the body?
Answer:
Minerals like iron, calcium, sodium, potassium are essential for the body.

Question 27.
What is ‘anaemia’?
Answer:
If there is a deficiency of iron in the blood, the body does not get enough supply of oxygen and one feels constantly weak and tired. This condition is called ‘anaemia’.

Question 28.
What are the sources of vitamins and minerals?
Answer:
All kinds of fruits, vegetables, green leafy vegetables, sprouted, pulses, their skin and the bran of cereals and pulses are all sources of vitamins and minerals.

Question 29.
What is the requirement for our good health?
Answer:
For good health, our body should get all the different constituents of food, namely, carbohydrates, proteins, fats, vitamins and minerals in the right quantities.

Question 30.
What happens when a person does not get enough carbohydrates and proteins?
Answer:
If a person does not get enough carbohydrates and proteins, their growth gets stunted, he feels constantly tired and cannot cope with his studies, games or other tasks.

Give reasons:

Question 1.
We should eat fruits with their skins as far as possible.
Answer:

The skin of fruits contains, fibres, viatmins and minerals.
Vitamins and minerals help our body to resistance.
Vitamins and minerals also help in smooth working of all the process taking place in our body.
The roughage present in skin allow the smooth movement of food in the alimentary canal and hence prevents constipation.

Therefore we should eat fruits with their skins as far as possible.

Question 2.
Growing children and body builders need to have more proteins in their diet.
Answer:
Proteins are the building blocks of our body. They are needed for healing and repairing the wear and tear taking place in our body. They are also needed for building muscles. Since building up processes take place more in growing children and body builders, their diet should contain more proteins.

Question 3.
If a person is suffering from anaemia, he constantly feels weak and tired.
Answer:
A person suffers from anaemia when he has iron deficiency. Iron is present in the blood cells. Iron helps transporting oxygen to various parts of our body. The oxygen is used to bum the sugars slowly and release energy. This energy releases is used for doing various work.

When there is deficiency of iron, sufficient oxygen is not transported and supplied to various parts of the body. Due to less supply oxygen less energy is released from sugars. Due to lack of energy the person suffering from anaemia constantly feels weak and tired.

Question 4.
It is necessary to include some amount of fats in our food.
Answer:
Fats are stored in our body and when food is not available the body uses this fat to release energy. The fats stored give shape to our body and also prevent loss of heat from our body. This helps in keeping the body warm. The fats also protect our internal organs from damage. Therefore it is necessary to include some amount of fat in our food.

Question 5.
We doesnot wash vegetables after cutting them.
Answer:
Vegetables conatin vitamins and minerals which get washed away if vegetables are washed after cutting them. Hence we do not wash vegetables after cutting them.

Question 6.
State whether the following statements are right or wrong:

By eating vada pav daily we can fulfill the nutritional requirement of our body.
Deficiency diseases can be prevented by eating a balanced diet.
Our diet will be balanced diet if it contains, variety of food, like dal, rice, roti, vegetable, cereals and salads.
Daily eating meat alone would provide all the nutrients to the body.
Eating vegetables and fruits makes a person disease resistant.

Answer:

Wrong
Right
Right
Wrong
Right

Answer the following questions:

Question 1.
Read the items of food listed below:
Classify them into carbohydrates rich, protein rich and fat rich food and write it in the tabular form.
Chick pea (chana) dal, fish, mustard oil, sweet potato, rice, peas, maize, white bread, sweet corn, paneer, egg, palm oil, ghee, butter.
Answer:

Carbohydrate rich	Protein rich	Fat rich
Rice	Chickpea dal (chana dal)	Mustard oil
Sweet potato	Fish	Palm oil
Maize	Peas	Ghee
White bread	Paneer	Butter
Sweet corn	Egg

Question 4.
Why do we use a padding of cloth under a mortar, when we place it on the floor and pound something on it?
Answer:
The cloth serves as shock absorberIt prevents the floor from getting damaged from the vibrations of the mortar and pestle by absorbing these vibrations. Thus we use the cloth to protect the floor and prevent from cracking due to the providng of the mortar and pestle.

Question 5.
How can you test presence of starch in food?
Answer:
We should take the food item and mash it and put it in a test tube and add some drops of iodine solution. If the colour changes to blackish blue, starch is present. If it remains pale yellow . starch is absent.

Question 6.
What are vitamins?
Answer:
Vitamins are components of foods which help us to fight diseases and they build up our resistance. They are required in small quantities. There are different kinds of vitamins like vitamin A, B, C, D, K and E. The main sources of vitamins are green leafy vegetables and fruits.

Question 7.
Why are carbohydrates called energy giving food?
Answer:
When carbohydrates are digested they are converted to sugars. The sugars combine with oxygen and bum slowly in our body releasing energy. This energy is utilised for doing various work. Hence carbohydrates are called energy giving food.

Question 8.
State the functions of fats in our body.
Answer:
Fats provide energy like carbohydrates. They are stored in our body and are utilised to provide energy when carbohydrates are not available. They give shape to our body and prevent heat loss. Hence they keep our body warm. They also proetct our internal organs from damage as they act like shock absorber.

What’s the solution?

Question 1.
Sameer is having difficulty in seeing things in dim light. Specially he has difficulty in seeing at night. Doctor suggested he is suffering from Night blindness.
Answer:
Sameer is suffering from Vitamin A deficiency. So he should include foods rich in vitamin A. He should include foods like carrots, pumpkins, green leafy vegetables, raddish, mango, papaya in his diet. He can also take vitamin A drops which are given by the doctors in Municipal hospital.

Can you tell?

Question 1.
What substances do we use to give our food a sweet taste?
Answer:
We use sugar and jaggery to give our food a sweet taste. Sometimes dates, also are used to give sweet taste.

Question 2.
What are the preparations that are served as mid day meal?
Answer:
Mostly Khichdi made by cooking mixture of rice, pulses like moongdal, groundnuts, vegetables etc. is served as mid day meal. This is a whole some food as it serves all the nutrients like carbohydrates, proteins, minerals, fats and vitamins. Sometimes snacks like upma and poha are also served as mid day meal.

Question 3.
Why are boxes of fragile articles like TV, refrigerator, light, bulbs, glasses, mirrors packed with corrugated cardboard, thermocol or bubble wrap?
Answer:
The corrugated cardboard, thermocol or bubble wrap absorb the shocks, when there is a jerky movement and protect the fragile articles from getting damaged. Therefore they are used for packing these fragile articles.

Question 4.
Suppose a wall is to be built. The cement, sand, water is all there but the mason says the most important material is missing. What can that be?
Answer:
The bricks which are building blocks are missing. Without these the walls cannot be built.

Use your brain power:

Question 1.
Threads get stick between the teeth when we eat certain types of magoes. Which kind of carbohydrates are they?
Answer:
The threads found in mangoes are made up of fibres and they are a type of carbohydrate.

Question 2.
Do we get all the different constituents of food from a meal that consists of a green veg thalipeeth eaten with yoghurt?
Answer:
Thalipeeth is made from a flour made by grinding a mixture of cereals and pulses. Cereals and pulses will provide us with carbohydrate and proteins. Green vegetable added to it will provide us with vitamins and some minerals. Yoghurt will also provide us with minerals and proteins. Therefore we will get all the constituents needed if we eat this green veg thalipeeth with yoghurt.

Question 3.
Which food constituents do we get from the ingredients used to make bhel?
Answer:
From the murmura or puffed rice used we get carbohydrates. The sev and farsan used provide, proteins and fats. The vegetables like onion, tomato, coriander etc. provide us with vitamins and minerals. The (sweet and hot) chutneys used also provide us with sugars, vitamins and minerals.

Question 4.
Why do we feel hungrier in winter than we do in summer?
Answer:
The sugars obtained by digestion of carbohydrates are slowly burnt to release energy. Some of the energy released is utilised by the body to generate heat and keep the body warm. During winter when the temperature outside is cold. Therefore the body needs to bum more sugar to generate more heat to keep the body warm. Whereas in summer less heat is required so less sugar is burnt to produce heat.

Since more sugar is required in winter to keep the body warm than in summer, we feel hungrier in winter than we do in summer.

Glossary:

resisting – trying to prevent.
brittle – hard but can break easily
stunted – reduced, spoiled.
anaemia – weakness.
malnutrition – lack of proper nutrition
absorber – reduce the effect of
pestle – a device used since ancient times to prepare ingredients or substances by crushing and grinding them into a fine paste or powder.
corrugated – a series of parallel ridges and furrows
fragile – not strong.

Class 5 Environmental Studies Questions and Answers:

Clothes – Our Necessity Class 5 Questions And Answers EVS Chapter 17 Maharashtra Board

January 10, 2025January 9, 2025 by Bhagya

Balbharti Maharashtra State Board Class 5 Environmental Studies Solutions Chapter 17 Clothes – Our Necessity Notes, Textbook Exercise Important Questions and Answers.

5th Standard EVS 1 Lesson Number 17 Question Answer Clothes – Our Necessity Maharashtra Board

Std 5 EVS 1 Chapter 17 Question Answer

1. Write the names of those objects in the list below that you would like to own.

Question 1.
Write the names of those objects in the list below that you would like to own.

Water bottle
Ball
Marbles
Laptop
Flower pot
Mobile phone
Bicycle
Scooter
Photoframe
Tiffin box

Which of these objects will you use yourself?

2. Make a note of the clothes you would choose to wear on a ‘traditional day’.

3. The names of some States are given in the table below. Write the names of the fabric or garments they are famous for.

State	Fabric/Garment
Maharashtra
Gujarat
Punjab
Odisha
West Bengal
Karnataka

Environmental Studies Part 1 Standard 5th Solutions Chapter 17 Clothes – Our Necessity Additional Important Questions and Answers

Fill in the blanks with the correct answers from the options given below:

Question 1.
Wanting clothes and really ………………. them are different things.
(a) needing
(b) kneading
(c) threading
Answer:
(a) needing

Question 2.
Wanting things when we do not need them is simply ……………….., not necessity.
(a) need
(b) greed
(c) desire
Answer:
(c) desire

Question 3.
The diversity in clothes is a part of the in our country.
(a) varsity
(b) diversity
(c) city
Answer:
(b) diversity

Question 4.
During the evolution of man, his ……………… went through many changes.
(a) clothes
(b) body
(c) hairstyle
Answer:
(b) body

Question 5.
We see a variety in the ………………… used by man through the ages.
(a) clothes
(b) utensils
(c) roads
Answer:
(a) clothes

Question 6.
After man began to hunt, he wore the ………………… of animals he had killed.
(a) bones
(b) skins
(c) horns
Answer:
(b) skins

Question 7.
…………………. has given us enough to fulfill everyone’s needs.
(a) Trees
(b) Rocks
(c) Nature
Answer:
(c) Nature

Question 8.
Man must give priority to his ………………….. and not desires.
(a) needs
(b) clothing
(c) fashion
Answer:
(a) needs

Question 9.
……………….. was famous worldwide for its textile mills.
(a) Chennai
(b) Delhi
(c) Mumbai
Answer:
(c) Mumbai

Question 10.
……………… became an important hub for financial activity in India.
(a) Goa
(b) Bangalore
(c) Mumbai
Answer:
(c) Mumbai

Question 11.
The clothes worn in different regions of the country are different depending on the local …………. .
(a) climate
(b) job
(c) trends
Answer:
(a) climate

Answer in one sentence:

Question 1.
Under what conditions can attraction to clothes turn to greed.
Answer:
When we are attracted towards the clothes shown in advertisements on TV or hoardings, this attraction can turn to greed.

Question 2.
Name some sarees from different parts of India.
Answer:
Lucknow chikan, Kashmir silk, Benarasi silk, Kadiyal, Pitambari, Pochampalli, Narayanpet, Kanjivaram, Patola and Mysore silk are some types of sarees from different parts of India.

Question 3.
Why have a variety of fabrics and costumes come into use?
Answer:
A variety of fabrics and costumes have come into use due to the diverse climatic conditions in different parts of the country.

Question 4.
How have these fabrics and costumes become available in all places?
Answer:
Due to better transport facilities, these fabrics and costumes have become available in all places.

Question 5.
When can nature take care of us?
Answer:
When man gives priority to his needs and not desires, only then will nature be able to take care of us all.

Question 6.
Why did Mumbai become a big centre for textile?
Answer:
The humid weather facilitated the manufacture of long thread for making cloth. That is why, Mumbai became a big centre for textile.

Question 7.
How did Mumbai become an important hub for financial activity in India?
Answer:
The flourishing cloth industry attracted workers from all over the country who came and settled here. From then on, Mumbai became an important hub for financial activity in India.

Question 8.
Why are clothes worn in different regions of the country different?
Answer:
The clothes worn in different regions of the country are different depending on the local climate.

Answer the following in brief:

Question 1.
List some of the textile specialties of Maharashtra.
Answer:
The examples of the textiles that are the specialties of Maharashtra are:

The Paithani of Paithan.
Yeola, Himroo shawls of Aurangabad.
Bedsheets and bed spreads from Solapur.
Handloom and powerloom cloth from Ichalkaranji.

Question 2.
On evolving, why did man feel the need for clothes?
Answer:

During the evolution of man, his body went through many changes.
One of the prominent changes was the reduction in the amount of body hair.
As a result, he began to need protection from the elements in certain weather conditions.
Thus arose the need for clothes.

Question 3.
Showcase the variety in the clothing used by man through the ages.
Answer:
1. In prehistoric times, man did not find the need to wear clothes. Later he began using the bark and leaves of trees.
2. After that he began to hunt and used the skins of animals that he killed.
3. Later he learnt to make yam from materials like cotton, wool.
4. From then on he began to use cotton cloth in a variety of ways.

Try this:

Question 1.
Visit people in your surroundings who often take shelter at places like railway or bus stations, brick kilns open grounds etc. Discuss the following points with them and make notes.

Question 1.
What is the total number of clothes they have?
Answer:
One pair which is worn and probably another pair if someone has been charitable to them.

Question 2.
What do they wear in summer?
Answer:
They do not have a choice, as they wear whatever is given to them, no matter the fit or how oversized it is.

Question 3.
What kind of clothes do they wear in winter?
Answer:
They wear layers of clothes one top of another just to ward off the winter as they cannot afford woollens nor have much shelter.

Question 4.
What clothes do they use during the monsoon season?
Answer:
They wear the same clothes that are available to them and mostly they cover themselves with a plastic sheet to protect themselves from rain.

Question 4.
What do they wear to functions and festivities?
Answer:
They do not get a chance to visit any function nor can they afford any festivities. If at all they go to any functions, they go as labourers or maids. So, they wear their daily clothes.

Question 5.
How many times a day do they change their clothes?
Answer:
Only once when they bathe, that too if they get water.

Question 6.
What did you realise from the activity above?
Answer:
I realise that I have too many clothes than I really require.

During a visit to textile industry obtain information about the following points:

Question 1.
What industry is this?
Answer:
Cottage industry/ smaH scale industry

Question 2.
What is the product of this industry?
Answer:
They are producing cloth.

Question 3.
What raw material is used to produce this fabric?
Answer:
Cotton bales and yams of thread is used to produce this fabric.

Question 4.
From where does this raw material come?
Answer:
From the farms in the nearby areas.

Question 5.
In what form is the raw material obtained?
Answer:
The raw material is obtained in the form of cotton.

Question 6.
Where is the finished product sent for sale?
Answer:
The finished product is sent to local and retail shops.

Question 7.
In which season are these textiles mainly used?
Answer:
These textiles are mainly used in monsoon and winter i.e. when the climate is humid.

Question 8.
What kinds of workers are needed for this industry?
Answer:
People with little or no education, but highly skilled to do their job.

Question 9.
Where do these workers come from?
Answer:
These workers come from remote villages in search of job in cities or from areas nearby the industry.

Question 10.
In what way have centres of textile industry changed since the olden days?
Answer:
Early days they had machines run by man power. Nowadays, every machine is run on electric power and production is swift and efficient.

Question 11.
What problems are encountered in this industry?
Answer:
It is difficult to get skilled labourers who will work honestly for long hours for a very miserable salary.

3. To find out more about the different varieties of clothes, visit a clothes market with your parents. Discuss the points given below, with the people there and make notes.

Question 1.
Look at the variety of clothes and make a list of their names.
Answer:
Salwar Kameez, saree, trousers, jeans, T-shirts, formar and informal shirts, dresses, skirts, tops, shorts etc.

Question 2.
Which of these are meant only for children, for adults or for aged people?
Answer:
For children – Shorts, skirts, tops, t-shirts, jeans
For adults – Trousers, shirts, jeans, tops, sarees etc.
For aged people – Sarees, salwar kurta, dhoti, shirts etc.

Question 3.
Find out about the various types of sarees.
Answer:
Lucknow chikan, Kashmir silk, Benarasi silk, Kadiyal, Pitambari, Pochampalli, Narayanpet, Kanjivaram, Patola, Mysore silk etc.

Question 4.
Note down the names of places famous for their sarees.
Answer:
Paithan, Lucknow, Benaras, Kashmir, Kamatak etc.

Talk to the elderly people in your family or locality to obtain this information.

Question 1.
What clothes did they wear during their childhood? Make a list of the clothes they name.
Answer:
Frock for girls and shorts and shirt for boys.

Question 2.
Take the list to a cloth/garment shop and see which of these clothes in your list are available there.
Answer:
It will be available in very few shops.

Question 3.
Find out which of the clothes are not worn any more.
Answer:
Half saree, Pawdaa, Lungi, Dhoti, Lugda etc.

Question 4.
Find out the places where these clothes used to come from.
Answer:
These clothes come from different states of India.

Question 5.
Find out why these clothes went out of use.
Answer:
People in urban areas mostly wear western clothes so they do not find these clothes trendy any more.

Glossary:

1. hub – the effective centre of an activity.
2. facilitated – made easy or easier
3. kilns – furnaces or ovens for making bricks.

Class 5 Environmental Studies Questions and Answers:

Historic Period Class 5 Questions And Answers EVS Chapter 10 Maharashtra Board

January 10, 2025January 9, 2025 by Bhagya

Balbharti Maharashtra State Board Class 5 Environmental Studies Solutions Chapter 10 Historic Period Notes, Textbook Exercise Important Questions and Answers.

5th Standard EVS 2 Lesson Number 10 Question Answer Historic Period Maharashtra Board

Std 5 EVS 2 Chapter 10 Question Answer

1. Answer the following question in one sentence.

Question a.
Where did the people in the New Stone Age establish their village settlements?
Answer:
The people in the New Stone Age established their village-settlements on the banks of rivers.

Question b.
What articles were the Harappan craftsmen skilled at making?
Answer:
The Harappan craftsmen were highly skilled in making bronze objects and beads from semi-precious stones of different colours.

2. Answer the following question in brief.

Question a.
What are some of the well-known characteristics of Harappan cities?
Answer:
The well-known characteristics of Harappan cities are :

Systematic town planning.
The houses were built in blocks created by parallel roads that crossed each other at right angles.
Huge granaries and spacious houses.
Concern for public hygiene indicated by bathrooms and latrines in every house and a covered drainage system.
Carefully constructed private and public wells.
City divided into two to four parts, each having a separate fortification.

Question b.
What made the soil on the banks of the Nile fertile?
Answer:

The river Nile gets flooded every year.
The land along her banks has become very fertile due to flood deposits.
Small embankments were built on the river to store the floodwater.
After the soil in the flood water settled to the bottom, the water was used for irrigation.

3. Complete the following chart.

Question 1.
Complete the following chart.
Maharashtra Board Class 5 EVS Solutions Part 2 Chapter 10 Historic Period 1

Activities :

Question a.
Show the sites of Harappan Culture in an outline map of india.

Question b.
Visit various artistes in your locality who play musical instruments. Collect information a bout their instruments.

Question c.
Visit some senior citizens in your locality and collect information about the traditional sports and games of their times.

Environmental Studies Part 2 Standard 5th Solutions Chapter 10 Historic Period Additional Important Questions and Answers

Fill in the blanks :

Question 1.

………………….. records are available in the form of inscriptions, manuscripts, books, etc.
We humans change the natural character of our …………….. to some extent.
Humans do not eat their ……………….. in its natural form as other animals do.
Humans make pots, bricks and many other things from ……………
Cultures which flourished in the New Stone Age were based on an ………………… way of life.
Fertile soil and constant water supply are essential to grow good ………
People in the New Stone Age established their village-settlements on the banks of various
New Stone Age cultures gave rise to early …………
The civilizations of the four regions are known as ……… Civilizations.
Mesopotamia is the name of a ………………….
Mesopotamia means the ………………… between two rivers.
Ancient Mesopotamia was the land between two rivers ………………….. and …………
Ancient ……………. has great cities like Ur, Uruk, Nippur etc.
The river ………………. flows through the eastern part of the Sahara Desert
One of the ancient civilizations that flourished along the banks of river Nile is known as ……………… civilization
The ancient civilization of China developed and flourished in the valley of the ……………… river.
According to the Chinese tradition, a king named ………………….. introduced agriculture, animal husbandry, carts, chariots, boats and clothing in China.
Luoyang, Beijing and Chang are among the important cities of ancient ………… .
The earliest civilization on the Indian subcontinent is known as ………… civilization.
……………. in Punjab and ……..in Sind are the two sites of the ………………… civilization.
The Harappan worshipped……………. and a mother goddess.
……………….. and ………………. were important means of entertainment in Harappan civilization.
Games played with the help of game boards and ………….. were also popular.
Music and ……………. were also very important in the early civilization.
Ancient people used many types of ……… instruments.
In Mesopotamia, a stringed instrument ………… known as ……………… was very popular.
Egyptian kings were known as ………..
A bronze image of a …………….. was found in excavation at Mohen-jo-daro.

Answer:

written
surroundings
food
clay
agricultural
crop
rivers
civilizations
Riverine
region
and
Tigris, Euphrates
Mesopotamia
Nile
Egyptian
Huang He
Huangdi
China
Harappan
Harappa, Mohen-jo-daro
Pashupati
hunting, wrestling
gamesmen
dance
musical
Balag
Pharaoh
dancer.

Answer each of the following questions in one sentence :

Question 1.
How are written records available?
Answer:
Written records are available in the form of inscriptions, manuscripts, books etc.

Question 2.
What brought an end to the New Stone Age?
Answer:
With the rise of ancient civilization, the New Stone Age came to an end and the Historic Period began.

Question 3.
What is a significant difference between humans and animals?
Answer:
Animals do not bring about change in their environment, whereas humans change the character of their surroundings, they process substances from nature to suit their needs. This is the significant difference between humans and animals.

Question 4.
Where did the people in the New Stone Age establish their village-settlements?
Answer:
The people in the New Stone Age established their village settlements on the banks of various rivers.

Question 5.
Why did the people in the New Stone Age establish their village-settlements on the banks of various rivers?
Answer:
Fertile soil and constant water supply are essential to grow good crops. Since the people in the New Stone Age followed the agricultural way of life, they established their village settlements on the banks of various rivers.

Question 6.
What gave rise to the early civilizations?
Answer:
Increased production because of industrial skills, the use of the wheel, flourishing of trade, use of well-developed scripts etc. gave rise to the early civilization.

Question 7.
In which four regions of the world did the ancient civilization come into existence?
Answer:
Mesopotamia, Egypt, the Indian subcontinent and China are the four regions of the world where ancient civilization came into existence.

Question 8.
What are these four civilizations called? Why?
Answer:
The ancient civilizations in these four regions developed in river valleys and hence they are called ‘Riverine Civilizations!

Question 9.
What does Mesopotamia mean?
Answer:
Mesopotamia means ‘Land between two rivers’

Question 10.
Between which two rivers did Mesopotamia bloom?
Answer:
Mesopotamia bloomed between the two rivers Tigris and Euphrates.

Question 11.
Which were the ancient cities in Mesopotamia?
Answer:
Cities like Ur, Uruk, Nippur blossomed in ancient Mesopotamia.

Question 12.
Where did the Egyptian Civilization flourish?
Answer:
The Egyptian Civilization flourished along the banks of river Nile in the north of Africa.

Question 13.
Where did the ancient civilization at China flourish?
Answer:
The ancient civilization of China flourished in the valley of the Huang He River.

Question 14.
What did the Chinese King introduce to the civilization?
Answer:
A Chinese king Huangdi introduced agriculture, animal husbandry, wheeled carts and chariots, boats and clothing in China.

Question 15.
What was the ancient Chinese belief?
Answer:
The ancient Chinese believed that their queen invented the technique of silk production and silk dyeing

Question 16.
Which were the important cities of ancient China?
Answer:
Luoyang, Beijing and Chang were the important cities of ancient China.

Question 17.
Which was the earliest civilization on the Indian subcontinent?
Answer:
The Harappan Civilization was the earliest civilization on the Indian subcontinent.

Question 18.
Where did the Harappan Civilization develop?
Answer:
The Harappan Civilization developed in the Indus Valley.

Question 19.
‘Indus’ is the English word for which name?
Answer:
‘Indus is the English word for the name ‘Sindhu’.

Question 20.
Which two sites of Harappan Civilization was unearthed first?
Answer:
Harappa in Punjab and Mohenjo-daro in Sind were the two sites of Harappan Civilization.

Question 21.
Which are the famous sites of the Harappan Civilization in India?
Answer:
Lothal and Dhola Vira in Gujarat and Kalibangan in Rajasthan are among the famous sites of the Harappan Civilization in India.

Question 22.
What articles were the Harappan craftsmen skilled at making?
Answer:
The Harappan craftsmen were highly skilled in making bronze objects and beads from precious stones of various colours.

Question 23.
Which things had great demand in Mesopotamia?
Answer:
The bronze objects and beads made of colourful precious stones made by the Harappan craftsman were in great demand in Mesopotamia.

Question 24.
Which were the main deities of the Harappan civilization?
Answer:
Pashuapati and a mother goddess were the main deities of the Harappan civilization.

Question 25.
Which were the important sports of the Harappans?
Answer:
Hunting and wrestling were the important sports of the Harappans.

Question 26.
Which were the popular indoor games of the Harappans?
Answer:
Games played with the help of game boards and gamesmen were popular indoor games of the Harappans.

Question 27.
Which indoor game similar to chess was played in ancient Egypt?
Answer:
Senat’ a game similar to chess was played in ancient Egypt

Question 28.
List some toys found in the excavations of Harappan sites.
Answer:
Whirls, whistles, rattles, bullock carts, animals and birds on wheels etc were some of the ‘toy’ found in the excavations of Harappan sites.

Question 29.
What was important in celebrating any festival in early civilizations?
Answer:
Music and dance were very essential in elebrating any festival in early civilizations.

Question 30.
What is ‘Balag’?
Answer:
In Mesopotamia, a stringed instrument known as ‘Balag’ was very popular.

Question 31.
Name some musical instruments in early civilization.
Answer:
Cymbals, rattles, flutes, drums etc. were some of the musical instrumentof the early civilization

Question 32.
What were the Egyptian kings known as?
Answer:
The Egyptian kings were known as ‘Pharaohs’?

Question 33.
What did the Pharaoh do on the occasion of certain festivals?
Answer:
On the occasion of certain festivals, the Pharaoh himself used to participate in the celebrations and dance.

Question 34.
What shows that dance was important in the Harappan Civilization?
Answer:
The bronze image of a dancer found in the excavation’ at Mohen-jo-daro is evidence that dance was important in the Harappan Civilization.

Question 35.
On what did humans and all other animals depend for satisfying their needs?
Answer:
Humans and all other animals depend on their environment and nature for satisfying their needs.

Question 36.
What are the characteristics of the earthen pots of the Harappan?
Answer:
The characteristics of the earthen ports are that they are well-baked, red in colour with beautiful designs.

Answer the following questions in brief.

Question 1.
What is ‘culture’?
Answer:

Every generation hands over the knowledgeof artistic skills and tradition to the next generation.
With this exchange of thoughts and ideas, language becomes richer and richer.
The knowledge of various arts, skills and tradition inherited from generation to generation and the way of life founded on that knowledge is ‘culture

Question 2.
What made the soil fertile on the banks of Nile?
Answer:
i. River Nile gets flooded every year. The land along her banks becomes very fertile because of the flood deposits.
ii. Ancient Egyptians used to build small embankments on the river to store the flood water. After the soil in the flood water settles at the bottom, the water is then used for irrigation

Question 3.
What are the characteristics of the earthen pots made by the Harappans?
Answer:
The characteristics of the earthen pots made by the Harappans are

Well baked pots, red in colour.
These pots had beautiful designs like pipal leaves and fish scales.
When tapped, these pots produced a metallic sound.

Question 4.
Explain how music and dance were very important in early civilizations.
Answer:

Music and dance were very important in the early civilizations.
They were an essential part of celebrating a festival.
Ancient people used many types of musical instruments like balag, cymbals, rattles, flutes, drums, etc.
A bronze image of a dancer was found in the excavation at Mohen-jo-daro is evidence that dance too, was important in the Harappan Civilization.

Question 5.
Which were the games and sports of the ancient civilizations?
Answer:

Hunting and wrestling were important sports in the ancient civilizations.
There were several games played on game boards like chess.
In ancient Egypt people played a game that was similar to chess known as Senat’.

Glossary :

rattles : an instrument making rattling sound
cymbals : brass instruments
worshipped : prayed to
bloomed : sprout out
dyeing : add a colour to or change a colour
excavation : a site that has ben escavated
fertile : capable of producing vegetation
spacious : having ample space
drainage : all the components that carry the sewage and other waste water to a point of disposal
hygiene : maintaining cleanlines
metallic : made of metal

Class 5 Environmental Studies Questions and Answers:

From Shelters to Village-settlements Class 5 Questions And Answers EVS Chapter 7 Maharashtra Board

January 10, 2025January 9, 2025 by Bhagya

Balbharti Maharashtra State Board Class 5 Environmental Studies Solutions Chapter 7 From Shelters to Village-settlements Notes, Textbook Exercise Important Questions and Answers.

5th Standard EVS 2 Lesson Number 7 Question Answer From Shelters to Village-settlements Maharashtra Board

Std 5 EVS 2 Chapter 7 Question Answer

1. Answer the following question in one sentence.

Question a.
Which animals did the Homo sapiens mainly hunt?
Answer:
The Homo sapiens mainly hunted small animals like the wild bear, deer, mountain goat and sheep.

Question b.
What is the characteristic of the New Stone Age?
Answer:
The beginning of cultivation is a characteristic of the New Stone Age culture.

2. Give reasons for the following.

Question a.
The diet of Homo sapiens underwent a change.
Answer:
The climate underwent change and became warmer.
Big animals like mammals were on the way to extinction. Therefore, the diet of the Homo sapiens underwent a change.

Question b.
Homo sapiens needed to stay in one place over longer periods of time.
Answer:

It was no longer necessary to wander from place to place in search of food.
They moved their camps to different places according to seasonal changes in climate. Thus, the Homo sapiens stayed in one place over a longer period of time.

3. Observe the reconstructed picture of a Middle Stone Age seasonal camp and answer the following.

Maharashtra Board Class 5 EVS Solutions Part 2 Chapter 7 From Shelters to Village-settlements 1

Question a.
Describe the structure of the houses in the picture.
Answer:
The roof is inclining and is of thatched grass.

Question b.
What materials are used to construct the houses?
Answer:
Grass and wood have been used to construct the houses.

Question c.
What kind of jobs could the people in the seasonal camps have been doing?
Answer:
The people at the seasonal camp were engaged in fishing, agriculture, hunting, and making small boats.

4. Write about the effects on your life, of the seasonal changes in weather.

Question 1.
Write about the effects on your life, of the seasonal changes in weather.
Answer:
The seasonal changes in weather result in changes in my clothing. I wear warm clothes during winter and light cotton clothes in summer.
The seasonal changes in climate make me sick sometimes and I am forced to take medicines.
I cannot go out and play games with my friends in the rainy season.

5. Compare the New Stone Age village with a modern village.

Question 1.
Compare the New Stone Age village with a modern village.
Answer:

New Stone Age village	Modern village
1. New Stone Age village was primitive as it was an early village-settlement.	1. Modern village is much developed as it underwent many changes over a period of time.
2. New Stone Age village was in remote areas and had no contact with the outside world.	2. Modern villages are well-connected with the outside world with the means of transport and communication.
3. Human beings lived in huts.	3. Human beings live in constructed houses.
4. Agriculture, animal husbandry, and fishing were the main activities of the villagers.	4. Besides agriculture, animal husbandry, and fishing, many other activities are undertaken by the villagers with the help of machines.

Activities :

a. Construct models of different types of houses.
b. Visit agricultural farms and collect information of the various agricultural tasks that farmers have to do.
c. Visit five different types of houses in your locality and collect information about the materials used in the construction of those houses.
d. With your teacher’s help, observe the continents shown on a world map or a globe and write short notes about them.

Environmental Studies Part 2 Standard 5th Solutions Chapter 7 From Shelters to Village-settlements Additional Important Questions and Answers

Fill in the blanks :

Question 1.

The Neanderthals could protect themselves from the freezing temperatures because they wore ……… clothing and made
They used animal hides to erect ………. inside the caves for warmth
They also built………………… in the open.
In the Middle Stone Age groups of Homo sapiens established …………… all over the world.
At that time, the climate was getting …………….
With the change in environment, the ……….. of the Homo sapiens also changed.
Big animals like mammoth were on the way to…………….. .
The ………………… were hunted on a large scale.
Homo sapiens had largely turned to …………………… with hunting.
Homo sapiens hunted. ……… animals like boar, deer, mountain goat and sheep.
The changed diet pattern enabled the groups of Homo sapiens to………………. to faraway regions.
They moved their camps to different places according to ……………………. changes.
The Homo sapiens harvested seasonal wild grains and gathered seasonal and ………
They would find out the best seasons for ……………
By observation, they discovered the best ……………. grounds.
They ……………… in one place for longer periods.
They cleared jungles by felling trees and set up their ……… camps in the clearings.
The ways of life of …………………….. in the New Stone Age was completely different from that of humans in the Old Stone Age.
In the New Stone Age, humans became …………… of foodgrains.
The beginning of ……………….. is a characteristic of the culture of the New Stone Age.
In the ……………. way of life, it is necessary to keep moving all the time.
Agriculture made it possible to ………………… food and use it over a long period.
………….. made it necessary to stay in one place.
People established …………. settlements and lived in them generation after generation.
In the Middle Stone Age, the climate was getting ………….
The Neanderthals used animal…………… to erect tents inside the caves for warmth.

Answer:

leather, fire
tents
huts
camps
warmer
diet
extinction
mammoth
fishing
smaller
oam
seasonal
fruits, roots
fishing
hunting
stayed
seasonal
humans
producers
cultivation
hunting, gathering
store
agriculture
permanent
warmer
hides

Answer each of the following questions in one sentence:

Question 1.
Why did the Neanderthals live in caves?
Answer:
The Neanderthals lived in caves because at that time the climate in Europe was extremely cold.

Question 2.
How did the Neanderthals protect themselves from the extreme cold climate?
Answer:
To protect themselves from the freezing temperature, the Neanderthals made fire for warmth and wore leather clothing.

Question 3.
What did the Neanderthals do to their caves to protect themselves from the freezing temperature?
Answer:
To protect themselves from the freezing temperature, they used animal hides to erect tents inside the caves for warmth.

Question 4.
Where did they live when it was warm?
Answer:
They built huts in the open to live when it was warm.

Question 5.
Where did the Middle Stone Age man establish their camps?
Answer:
The Middle Stone Age man established their camps all over the world.

Question 6.
Why did they establish their camps all over the world?
Answer:
As the climate was getting warmer and the environment was changing their lifestyle and diet were also changing and this enabled them establish their camps all over the world.

Question 7.
How did a huge animal like the mammoth get extinct?
Answer:
A huge animal like the mammoth got extinct because mammoths were hunted on a large scale.

Question 8.
Which smaller animals did the Middle Stone Age man hunt?
Answer:
The Middle Stone Age man hunted smaller animals like boar, deer, mountain goat and sheep.

Question 9.
What enabled the Homo sapiens to travel to faraway regions?
Answer:
Their changed diet pattern enabled groups of Homo sapiens to roam to faraway regions.

Question 10.
Why did the Homo sapiens move their camps to different places?
Answer:
The Homo sapiens moved their camps to different places according to the seasonal changes.

Question 11.
Other than hunting, how did the Homo sapiens acquire their food?
Answer:
Other than hunting, the Homo sapiens harvested seasonal wild grains and gathered seasonal fruits and roots.

Question 12.
Why did the Homo sapiens begin to fell trees?
Answer:
The Homo sapiens felled trees to clear the jungles and set up their seasonal camps in the clearings

Question 13.
What enabled the New Stone Age man to establish permanent village-settlements?
Answer:
The nature of agricultural work made it possible for the New Stone Age man to establish permanent village-settlements.

Question 14.
In which way of life is it necessary to keep moving?
Answer:
In the hunting and gathering way of life, it is necessary to keep moving all the time.

Question 15.
According to the climate, what work was done by the Homo sapiens?
Answer:
According to the climate, fishing and hunting was the work done by Homo sapiens.

Give reasons for the following :

Question 1.
Homo sapiens had largely turned to fishing.
Answer:
As the mammoths became extinct due to hunting, the Homo sapiens turned to fishing.

Question 2.
Homo sapiens needed to stay in one place over a longer period of time.
Answer:
i. By observation of nature, the Homo sapiens discovered and learnt about the best seasons for fishing and the best hunting ground.
ii. For this reason, they needed to stay in one place for a longer period of time.

Question 3.
People established permanent village settlements.
Answer:
i. The nature of agricultural work made it necessary to stay in one place.
ii. Therefore people established permanent village-settlements to live in them generation after generation

Question 4.
By the time of the Middle Stone Age, big animals like mammoths were on the way to extinction.
Answer:
Due to the changing environment and also because they were hunted on a very large scale, big animals like mammoths were on the way to extinction by the time of the Middle Stone Age.

Answer each of the questions in brief :

Question 1.
Why did the hunting pattern of the Homo sapiens change with time?
Answer:

With the mammoth becoming extinct, the Homo sapiens had to turn to fishing.
He also hunted smaller animals like wild boar, deer, mountain goat and sheep.
Thus, the hunting pattern of the Homo sapiens changed with time.

Question 2.
How did the Homo sapiens discover the best hunting grounds and fishing seasons?
Answer:
By observation of nature and using this knowledge to their advantage, the Homo sapiens discovered the best season for fishing and also the best hunting grounds.

Question 3.
How and why did the Homo sapiens clear the jungle?
Answer:
i. For fishing and hunting in one particular region, the Homo sapiens needed to stay in one place for longer periods.
ii. So they cleared the jungles by felling trees and set up their seasonal camps in the clearings.

Question 4.
Why did the people of the New Stone Age establish permanent village-settlements and lived in them generation after generation?
Answer:

In hunting and gathering way of life, it is necessary to keep moving all the time.
However, agriculture made it possible to store food and use it over a longer period. Hence, their need to move constantly diminished.
The nature of agricultural work was such that they had to stay in one place.
Therefore people established permanent village-settlements and lived in them generation after generation.

Question 5.
How did the Neanderthals protect themselves from the cold?
Answer:

The Neanderthals mainly lived in caves.
They protected themselves from the cold by wearing leather clothes and making use of fire.
They also used animal hides to erect tents inside the caves for warmth.
This is how the Neanderthals protected themselves from the cold.

Question 6.
Why was there no need to keep moving constantly in the New Stone Age?
Answer:

The way of human life in the New Stone Age was completely different as compared to the life in the Old Stone Age and Middle Stone Age.
Humans became producers of food and started cultivating the land.
Agriculture made it possible to store food and use it over a longer period.
Therefore, there was no need for humans in the New Stone Age to constantly move from one place to another.

Glossary :

dietary : related to food
warmth : the quality or sensation of being warm.
extremely : very severe
faraway : distant in space and time.
felling : cutting down
scorching : burning
concrete : a building material made from a mixture of gravel, sand, cement and water
subsidiary : less important than but related to something
progre
ssive : proceeding gradually or in stages.

Class 5 Environmental Studies Questions and Answers:

Life on Earth Class 5 Questions And Answers EVS Chapter 3 Maharashtra Board

January 10, 2025January 9, 2025 by Bhagya

Balbharti Maharashtra State Board Class 5 Environmental Studies Solutions Chapter 3 Life on Earth Notes, Textbook Exercise Important Questions and Answers.

5th Standard EVS 2 Lesson Number 3 Question Answer Life on Earth Maharashtra Board

Std 5 EVS 2 Chapter 3 Question Answer

1. Answer the following question in one sentence.

Question a.
What instrument do we need to see a unicellular organism?
Answer:
We need a microscope to see a unicellular organism.

Question b.
Where did the protozoa appear first?
Answer:
The protozoa appeared first in water.

2. Answer the following in brief.

Question a.
How were the sun and the planets in our solar system created?
Answer:

Around 4-5 million years ago, an enormous cloud of very hot gases and dust was spinning at a great speed in space.
Its circular motion and great speed caused its division into several portions.
This splitting created the sun and the planets in our solar system.

Question b.
Write any two characteristics of animals.
Answer:

Animals move to find food and for other purposes.
Some species of animals lay eggs and their young ones are born out of the egg; whereas animals of some
other species give birth to their young ones.

3. Find the names of the planets in the box below.

Question 1.
Maharashtra Board Class 5 EVS Solutions Part 2 Chapter 3 Life on Earth 1
Answer:

Mercury
Jupiter
Venus
Mars
Saturn
Neptune
Earth
Uranus

4. Arrange the events given below in chronological order.

Question 1.
Arrange the events given below in chronological order.
(a) Water bodies appeared on the earth’s surface.
(b) The sun and the planets revolving around it were created.
(c) Protozoa appeared in water.
(d) An enormous cloud of hot gases and dust was formed in space.
Answer:
(a) An enormous cloud of hot gases and dust formed in space.
(b) The sun and the planets were formed.
(c) Water bodies appeared on the earth’s surface.
(d) Protozoa appeared in water

Activity :

Question 1.
Make a model of the solar system using balls of different sizes.

Project :

Question 1.
Visit a zoo or make a list of animals which are seen in your neighbourhood and note their characteristics.

Environmental Studies Part 2 Standard 5th Solutions Chapter 3 Life on Earth Additional Important Questions and Answers

Fill in the blanks:

An enormous’ cloud of very hot gases and dust spinning at a great speed was formed in ………… .
The cloud’s circular motion and great speed caused it to divide into several portions, creating the …………………. and ……………..
………. and …………….. are planets.
The ………. is the only planet where life is known to exist
After the creation of the earth, it took about ………. years for its surface to cool down and for water bodies to be formed on it.
It is believed that various kinds of unicellular? organisms or living things, first appeared in …………. .
Unicellular organisms are known as ……….
Gradually, ……………….. living things developed from these unicellular ones.
Protozoa can only be seen through a ………..
The living world on the Earth consists of ………. and ………
Animals ………………… in order to get food or for other purpose.
Animals of some species lay eggs. Their young ones are born out of …………………
Some species, a mother gives ……………… to the young ones.
The protozoa are so ………….. that they cannot be seen with the naked eye.
Animals of some ………….. lay eggs.
Various kinds of .. ………… organisms first appeared in water.

Answer:

space
Sun, planets
Mercury, Venus
Earth
80 crore
Water
Protozoa
Multi cellular
Microscope
Plants, animals
Move
Eggs
Birth
Tiny
Species
Unicellular

Answer each question in one sentence :

Question 1.
When did the formation of the earth begin?
Answer:
On the basis of scientific research, it is believed that the formation of earth came into being around 4.5 billion years ago.

Question 2.
On the onset of creation, what was first formed?
Answer:
An enormous cloud of very hot gases and dust spinning at a great speed was formed in space.

Question 3.
How were the sun and planets formed?
Answer:
The circular motion of the great cloud caused it to divide into several portions thus creating the sun and planets.

Question 4.
Name the planets in our solar system.
Answer:
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune are the planets in our solar system.

Question 5.
What forms the solar system?
Answer:
The sun and planets which revolve around the sun forms the solar system.

Question 6.
Which is the only planet where life is known to exist?
Answer:
The Earth is the only planet where life is known to exist

Question 7.
How many years did it take for the surface of the Earth to get cooled?
Answer:
After the creation of the Earth, it took about 80 crore years for its surface to cool down and for water bodies to be formed on it.

Question 8.
What kind of living organisms appeared first? What are they known as?
Answer:
Various kinds of unicellular organisms or living things first appeared in water, they are known as ‘Protozoa’.

Question 9.
When did the multicellular living organisms appear?
Answer:
After the creation of unicellular organisms in water, gradually, multicellular living organisms developed from the unicellular ones.

Question 10.
State the main characteristics of animals in which young ones are born.
Answer:
Animals of some species lay eggs and their young ones are bom out of an egg. While in some other species, a mother gives birth to their young ones.

Question 11.
Which planets revolve around the sun?
Answer:
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune are the planets that revolve around the sun.

Question 15.
How many years ago was the cloud formed in space?
Answer:
The cloud was formed in space about 4-5 billion years ago

Answer the following questions in brief:

Question 1.
How did life develop on Earth? Or What was the origin of life on earth?
Answer:

After the creation of the Earth, it took about 80 crore years for its surface to cool down and for water bodies to be formed on it.
Various kinds of unicellular organisms known as protozoa, first appeared in water.
Gradually, multicellular living things developed from these unicellular ones.
Thus, life developed on Earth.

Glossary :

enormous : very large
unicellular : consisting of one cell
organism : an individual animal, plant or single-called life form

Class 5 Environmental Studies Questions and Answers:

History and the Concept of ‘Time’ Class 5 Questions And Answers EVS Chapter 2 Maharashtra Board

January 10, 2025January 9, 2025 by Bhagya

Balbharti Maharashtra State Board Class 5 Environmental Studies Solutions Chapter 2 History and the Concept of ‘Time’ Notes, Textbook Exercise Important Questions and Answers.

5th Standard EVS 2 Lesson Number 2 Question Answer History and the Concept of ‘Time’ Maharashtra Board

Std 5 EVS 2 Chapter 2 Question Answer

1. Fill in the blank.

Question a.
The calendar we use today is based on the ______________.
Answer:
The calendar that we use today is based on the Common Era/Christian Era..

Question b.
The period before the Common Era is known as the time ____________.
Answer:
The period before Common Era or Christian Era is known as the Before Christ (BC).

2. Answer the question in one sentence.

Question a.
which scientific methods are used to estimate the age of the layers of soil and the remains found in them?
Answer:
Carbon-14 analysis and Tree-rings analysis are the scientific methods used to estima~e age of the layers of soil and the remains found in them

Question b.
How is the first century of the Common Era written?
Answer:
The first century of the Common Era is written as 1-100 AD.

3. Answer the following question in brief.

Question a.
What is meant by the unilinear division of time?
Answer:

Seven days make a week; two weeks make a fortnight and four weeks make a month.
Twelve months make a year, a hundred years make a century and ten centuries make a millennium.
This method of dividing time is known as the unilinear division of time.

Question b.
What are the units of measuring time?
Answer:

A second is the smallest unit of measuring time. Sixty seconds make a minute and sixty minutes make an hour.
Twenty-four hours make a day; seven days make a week and two weeks make a fortnight.
Four weeks (two fortnights) make a month and twelve months make a year.
One hundred years make a century and ten centuries make a millennium.

4. Complete the chart given below.

Question 1.
Complete the chart given below.
Maharashtra Board Class 5 EVS Solutions Part 2 Chapter 2 History and the Concept of ‘Time’ 1
Answer:

Activity :

Question 1.
Prepare a monthly plan for yourself on the lines of the one given below.
Maharashtra Board Class 5 EVS Solutions Part 2 Chapter 2 History and the Concept of ‘Time’ 3

Environmental Studies Part 2 Standard 5th Solutions Chapter 2 History and the Concept of ‘Time’ Additional Important Questions and Answers

Fill in the blanks:

There are different methods of …………. time.
Time is ……………
We divide time into …………. .
We divide the day into two parts, and …………. .
Our earth rotates around its ………….. with a certain speed
Our Earth …………….. round the sun.
The sun has its own ………….
We receive ……….. from the sun.
The earth takes ………………….. hours to complete one rotation around its own axis.
A period of daytime and following night together make one …………. .
Seven days from Monday to Sunday make one ………….
Two weeks make a ……………….
Four weeks make a ……….
Twelve months make a …………..
One year is followed by another and, when hundred years go by, a ………….. completed.
When ten centuries, i.e. 1000 years are gone, a ………………… is completed.
In history books also, a chain of events that follow one after the other is presented in a … and ……………. manner.
………. means in the year of Our Lord.
The Christian or Common Era began in the memory of ………….
The first century of this era is written as …….. CE or AD.
The period of the first millennium of this era is written as ……………. CE or AD.
The years of this period are counted and written in …………………. order.
The first century before the Common Era is indicated as ……………. BCE.
The first millennium before the Common Era is indicated as …………………. BCE.
The life time of Vardhaman Mahavir is written as ………….
The lifetime of Gautam Buddha is written as ………….
Measuring time is to measure the …………… of time.
Second, day, month, century, are some of the …………. of measuring time.
………………. is the smallest unit of time.
It is an age-old custom to start a new to commemoratel a special event.
Chhatrapati Shivaji Maharaj started a new era known as ………………….. in 1674 to commemorate his coronation.
………………… and ……………. are two eras that are used in India.
The founder of Islam ……………….. migrated from Mecca to Madina.
The ………………….. era was started to commemorate prophet Muhammad’s migration.
The past is the subject matter of ………….
The period of history goes back to the time of the birth of our ……………….. system.
Our solar system came into being about ………………… billion years ago.
Our earth isa. ………. in the solar system.
The earth was also formed …………. billion years ago
History is divided into two main periods and ………….
The …………………….. period is the period for which no written records are available.
The period for which written records are available from which history can be written is known as the …………. period.
There are various methods of …………. .
There are many layers of ………….. deposited one above the other under the surface of the ground.
A rough estimate of how many years ago they existed can certainly be made using ……………. methods.
………………. analysis and …….. analysis are known as dating techniques.
…………. is a science that tells us about events that happened in the past.

Answer:

reckoning
continuous
period
day, night
axis
revolves
light
light
24
day
week
fortnight
months
year
century
millennium
linear, serial
Anno Domini
Jesus Christ
1-100
1-1000
reverse
100-1
1000-1
599 BC-527BC
563 BC – 483 BC
length
units
second
era
Rajyabhishek Shaka
Shalivahan Shaka, Vikram Samvat
Prophet Muhammad
Hijri
history
solar
4.5
Planet
4.5
Prehistoric, historic
prehistoric
historic
measuring
soil
scientific
Carbon14 analysis, tree-rings analysis
History

Match the columns:

Question 1.

Column ‘A’	Column ‘B’
1. Vardhaman Mahavir	a. 563BC-483BC
2. Sunrise to sunset	b. Smallest unit of time
3. Gautam Buddha	c. Day
4. Sunset to sunrise	d. One year
5. Second	e. 599BC-527BC
6. 100 years	f. Night
7. 12 months	g. A year
8. 1000 years	h. A week
9. Seven days	i. A century
10. Two weeks	j. A fortnight
11. Christian Era	k. A millennium
12. Rajyabhishek Shaka	l. Prophet Muhammad
13. Hijri Era	m. Jesus Christ
14. Shahenshahi Era	n. Parsi Community
15. Parsi Community	o. Chhatrapati Shivaji
16. Indian’s Era	p. Hijri Era
17. Muhammad migrate	q. Shahenshahi Era
	r. Rajyabhishek Shaka
	s. Vikram Samvat

Answer:

Column ‘A’	Column ‘B’
1. Vardhaman Mahavir	e. 599BC-527BC
2. Sunrise to sunset	c. Day
3. Gautam Buddha	a. 563BC-483BC
4. Sunset to sunrise	f. Night
5. Second	b. Smallest unit of time
6. 100 years	i. A century
7. 12 months	g. A year
8. 1000 years	k. A millennium
9. Seven days	h. A week
10. Two weeks	j. A fortnight
11. Christian Era	m. Jesus Christ
12. Rajyabhishek Shaka	o. Chhatrapati Shivaji
13. Hijri Era	l. Prophet Muhammad
14. Shahenshahi Era	n. Parsi Community
15. Parsi Community	q. Shahenshahi Era
16. Indian’s Era	s. Vikram Samvat
17. Muhammad migrate	p. Hijri Era

Answer each question in one sentence:

Question 1.
How is the day divided?
Answer:
The day is divided into two parts – day and night.

Question 2.
What are the two movements of the Earth?
Answer:
The two movements of the earth are rotation and revolution.

Question 3.
What is rotation?
Answer:
The movement of the earth around its own axis at a certain speed is called the rotation of the earth.

Question 4.
What is revolution?
Answer:
The movement of the earth around the sun is called ‘revolution of the earth’.

Question 5.
What is one day?
Answer:
The period of day time and the following night together makes one day.

Question 6.
What makes one week?
Answer:
Seven days, Monday to Sunday make one week

Question 7.
What is a fortnight?
Answer:
2 weeks or 14 days make a fortnight.

Question 8.
What makes a month?
Answer:
Four weeks or 30/31 days make a month.

Question 9.
What makes a year?
Answer:
Twelve months make a year.

Question 10.
How is a century completed?
Answer:
One year followed by another year and when 100 years go by, a century is completed.

Question 11.
What is a millennium?
Answer:
When ten centuries, i.e. 1000 years have gone by, a millennium is completed.

Question 12.
What is unilinear division of time?
Answer:
The method of dividing time into day, week, month, year, century and millennium is known as unilinear division of time.

Question 13.
What is Christian Era?
Answer:
This era began in memory of Jesus Christ and so this era is called as Christian Era.

Question 14.
What is common Era?
Answer:
The calendar we use today is based on the Christian era. Since it is commonly followed all over the world, now it is called as ‘Common Era’.

Question 15.
How is the first century of Common Era written?
Answer:
The first 100 years, i.e., the first century of this era is written as years 1 – 100 CE or 1 – 100 AD.

Question 16.
How is the first millennium written?
Answer:
The period of the first millennium of this era is written as, 1 – 1000 CE or 1 – 1000 AD.

Question 17.
What is BCE or BC?
Answer:
The period before the common era is known as the time “Before Common Era (BCE)” or
“Before Christ (BC)”.

Question 18.
How are the years recorded in the BCE or BC period?
Answer:
The years of this period are counted and also written in reverse order.

Question 19.
How is the first century of ‘Before the Common Era period’ written?
Answer:
The first century before the Common Era is indicated as 100 – 1 BC.

Question 20.
How is the first millennium of ‘Before the Common Era period’ written?
Answer:
The first millennium Before the Common Era is indicated as 1000 – 1 BCE.

Question 21.
How is the life time of Vardhaman Mahavir written?
Answer:
The life time of Vardhaman Mahavir is written as 599 BC – 527 BC.

Question 22.
How is the life time of Gautam Buddha written?
Answer:
The life time of Gautam Buddha is written as 563 BC – 483 BC.

Question 23.
Name the units of measuring time.
Answer:
Second, minute, hour, day, week, fortnight, month, year, century and millennium are units of measuring time.

Question 24.
Which is the smallest unit of measuring time?
Answer:
The second is the smallest unit of measuring time.

Question 25.
Which is the most common method of measuring time in different parts of the world?
Answer:
The Common Era or the Christian Era is the most common method of measuring time in different parts of the world.

Question 26.
How is a date written?
Answer:
The date consists of the serial number of that day followed by the name or serial number of the current month and then serial number of the current year.

Question 27.
When does a new era generally commence?
Answer:
It is an age-old custom to start a new era to commemorate a special event.

Question 28.
Which era was started by Shivaji Maharaj?
Answer:
Chhatrapati Shivaji Maharaj started a new era or shaka known as ‘Rajyabhishek Shaka’ in 1674 to commemorate his coronation

Question 29.
Which two eras are used in India?
Answer:
Shalivahan Shaka’ and ‘Vikram Samvat’ are two eras that are used in India.

Question 30.
Who is Prophet Muhammad?
Answer:
Prophet Muhammad is the founder of Islam.

Question 31.
When did Prophet Muhammad start an era?
Answer:
Prophet Muhammad migrated from Mecca to Medina, so, the ‘Hijri Era’ was started to commemorate this event.

Question 32.
Which era is used by the Parsi community in India?
Answer:
The Parsi community in India uses the “Shahenshahi Era”.

Question 33.
What makes up the subject matter of History?
Answer:
The past makes up the subject matter of History

Question 34.
When did our solar system come into being?
Answer:
Our solar system came into being about 4.5 billion years ago

Question 35.
How long ago was our earth formed?
Answer:
Our Earth is a planet in the solar system, so it is presumed that the earth was also formed 4.5 billion years ago.

Question 36.
Which two main periods is the time in History divided?
Answer:
The time in history is divided into two main periods: Pre-historic and Historic period.

Question 37.
What is Pre-historic period?
Answer:
The Pre-historic period is the period for which no written records are available.

Question 38.
What is Historic period?
Answer:
The period for which written records are available from which history is written is known as Historic period’.

Question 39.
What is years before the common era?
Answer:
The events before the beginning of the common era are mentioned as having occurred a certain number of years before the common era.

Question 40.
What are evidences?
Answer:
Evidence is usually in the form of man-made artifacts and fallen structures.

Question 41.
How can we determine the time of the events that took place thousands of years ago?
Answer:
With the help of artifacts and also using scientific methods we can determine the time of the events that took place thousands of years ago.

Give reasons for the following :

Question 1.
Time is divided into periods.
Answer:
i. There are different methods of reckoning time
ii. Time is continuous, but for our convenience we divide time into periods.

Question 2.
The Christian era is also known as the common era.
Answer:

The calendar we use today is based on the Christian era.
This era is most widespread and commonly used all over the world.
Therefore this era is now called the Common era.

Question 3.
Time in history is divided into two main periods.
Answer:

The span of 4.5 billion years, since the earth’s formation is a vast period of time.
It is not easy to grasp this entire period all at оnсе.
It is necessary to divide it into a number of stages in order to understand it better.
Therefore, Time in history is divided into two main periods, i.e. Pre-historic and Historic period.

Question 4.
The earth receives continuous light from the sun, but then too we see light only in day time and nights are dark.
Answer:

Due to the earth’s rotation around its own axis, only a part of the earth’s surface faces the sun.
It is only this part of the surface that becomes bright
The part that is not facing the sun remains dark.
Therefore we see light only in daytime even though the earth receives continuous light from the sun.

Question 5.
When we measure time, we actually measure its length.
Answer:

There are various methods of measuring time.
These methods allow us to identify a particular day, month or year with respect to an earlier or later day, month or year.
Thus, when we measure time, we actually measure its length.

Answer the following questions in brief :

Question 1.
How are days and nights formed?
Answer:

The earth receives light from the sun.
As the earth rotates around its axis, that part of the surface which turns towards the sun becomes bright i.e. day.
The part that moves away has darkness i.e. night thus days and nights are formed.

Question 2.
What is the unilinear division of time?
Answer:

Seven days from Monday to Sunday, make one week.
Two weeks make a fortnight.
Four weeks make a month.
Twelve months make a year.
One year is followed by another and, when 100 years go by, we have a century.
When 10 centuries, ie. 1000 years are gone, a millennium is completed.
Such a method of dividing time is known as a unilinear division of time.

Question 3.
Explain time before the common or Christian era.
Answer:

The period of time before the common era is known as the time before Common Era (BCE) or Before Christ (BC).
The years of this period are counted and written in reverse order.
The first century before the common era began at the year 100 BCE and ended with 1 BCE.
It is written as 100-1 BCE.

Question 4.
How do we measure the length of time?
Answer:

There are various methods of measuring time.
These methods allow us to identify a particular day, month, a year with respect to an earlier or later day, month or year.
For example, if it is June, then we know that the earlier month was May and the next one will be July.
If today is 10th of June, then we can tell that tomorrow will be 11th of June and yesterday was 9th of June.
Thus, when we measure time we actually measure its length.

Question 5.
How are dating techniques used?
Answer:

By using dating techniques we learn how old the layers of soil and the remains found in them are.
Then we can put approximate dates to their occurrence?
For example, if an earthen pot is estimated to be five thousand years old with the help of dating techniques, we can say that the earthen pot dates back roughly to 3000 BC
Then we can conclude that the period of the culture to which the pot belongs must be around 3000 BC.

Question 6.
What is meant by Prehistoric period?
Answer:

‘Prehistory’ means ‘before history’.
The prehistoric period is the period for which no written records are available.
The history of this period has not been written down.

Question 7.
What is meant by Historic period?
Answer:

Unlike the Prehistoric period, we can trace the events and progress of the historic period.
The historic period is the period for which written records are available.
We can use these written records to write history.

Glossary :

commemorate : remember and show respect for.
estimate : roughly calculate or judge the value.
unilinear : developing in a steady way.
coronation : the ceremony of crowning the ruler.
reckoning : the action of calculating
widespread : spread among a large o number or over a large area
occurrence : an incident or an event

Class 5 Environmental Studies Questions and Answers:

Busy at Work – Our Internal Organs Class 5 Questions And Answers EVS Chapter 21 Maharashtra Board

January 10, 2025January 9, 2025 by Bhagya

Balbharti Maharashtra State Board Class 5 Environmental Studies Solutions Chapter 21 Busy at Work – Our Internal Organs Notes, Textbook Exercise Important Questions and Answers.

5th Standard EVS 1 Lesson Number 21 Question Answer Busy at Work – Our Internal Organs Maharashtra Board

Std 5 EVS 1 Chapter 21 Question Answer

1. what’s the solution?

Question 1.
A person has fainted and a crowd of people has surrounded him.

2. Use your brain power!

Question (a)
Why do we sometimes choke suddenly while eating?
Answer:
The food that we chew in the mouth enters the oesophagus after swallowing. The upper ends of both the oesophagus and the windpipe open in the throat next to each other. When we swallow the food in a hurry while eating, sometimes the food suddenly enters the windpipe causing us to suddenly choke.

Question (b)
How is the air that we inhale purified in our body?
Answer:
The inner lining of the respiratory tract secretes a sticky substance called mucus. It also has hair-like structures called cilia. The air that we inhale is purified with the help of this mucus and cilia. The cilia filter the dust, smoke, micro-organisms etc. and these substances get entangled in the sticky mucus and stick to the inner lining of the nose. Sometimes the cilia push out these substances towards the nostrils which is then blown out by sneezing. Thus this is how air that we inhale is purified.

3. Fill in the blanks.

Question (a)
………………… gas is continuously transported to all parts of the body.
(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen
Answer:
(a) Oxygen

Question (b)
The stomach is like a …………………… .
(a) ball
(b) skin
(c) bag
Answer:
(c) bag

4. Match the columns:

Question 1.
Match the columns:

Group ‘A’	Group ’B’
1. Lungs	(a) Circulation
2. Stomach	(b) Respiration
3. Heart	(c) Co-ordination
4. Brain	(d) Digestion

Answer:

Group ‘A’	Group ’B’
1. Lungs	(b) Respiration
2. Stomach	(d) Digestion
3. Heart	(a) Circulation
4. Brain	(c) Co-ordination

5. Answer the following questions.

Question (a)
Name the systems that carry out the different functions of the body.
Answer:
The systems that carry out the different functions of the body are Digestive system, Respiratory system, Circulatory system, Excretory system, Nervous system and Skeletal system.

Question (b)
Describe how the exchange of oxygen and carbon dioxide gases takes place in the lungs.
Answer:
The air that we inhale contains oxygen. This outside air reaches the lungs with the help of the respiratory organs like nose, trachea and diaphragm. When the outside air reaches the alveoli present in the lungs it passes into the thin blood vessels around the alveoli.

With the blood, it flows to the various parts of the body. At the same time the carbon dioxide that is brought by the blood from all parts of the body leave the blood and enters the alveoli. When we exhale this carbon dioxide is given out. In this way the exchange of oxygen and carbon dioxide gases takes place in the lungs.

Question (c)
Why do we call saliva, a digestive juice?
Answer:
The digestive juice are the juices secreted by the glands present outside the digestive system and they help in digesting the food. When food is taken in the mouth, saliva is secreted by the glands called salivary glands into the mouth.

The saliva then mixes with the food that is chewed and it converts the food into soft moist ball called bolus which is easy to swallow. The saliva also digests the starch present in the food. Since saliva helps in digestion of food it, is called a digestive juice.

6. Choose the appropriate word from the brackets:

Question (a)
Respiration takes place because of its up and down movement.
Answer:
diaphragm

Question (b)
The process of keeping the blood flowing continuously throughout the body
Answer:
circulation

Question (c)
Air that enters through the nose and passes into this tube.
Answer:
trachea

Environmental Studies Part 1 Standard 5th Solutions Chapter 21 Busy at Work – Our Internal Organs Additional Important Questions and Answers

Fill in the blanks with the correct answers from the options given below:

Question 1.
The …………………. is present between the thoracic cavity and abdominal cavity below the lung.
(a) stomach
(b) diaphragm
(c) heart
Answer:
(b) diaphragm

Question 2.
The air sacs formed at the end of the last branches of the trachea are called ………………… .
(a) alveoli
(b) thoracic
(c) blood vessel
Answer:
(a) alveoli

Question 3.
The inner lining of the respiratory organs has the fine hair-like structures called ……………….. .
(a) nose
(b) cilia
(c) alveoli
Answer:
(b) cilia

Question 4.
A layer of sticky substances present in the inner lining of the respiratory organ is known as …………… .
(a) mucus
(b) cilia
(c) skin
Answer:
(a) mucus

Question 5.
Smoking causes life threatning diseases like ………………… .
(a) lung cancer
(b) asthma
(c) pneumonia
Answer:
(a) lung cancer

Question 6.
The process of digestion begins in the …………….. .
(a) stomach
(b) oesophagus
(c) mouth
Answer:
(c) mouth

Question 7.
Small intestine of an adult is …………………. long and the large intestine is ………………. long.
(a) 7 mtrs
(b) 1 1/2 mtr
(c) 2 mtrs
Answer:
(a) 7 mtrs, (b) 1 1/2 mtr

Question 8.
………………….. is the hardest substance in our body.
(a) Tooth enamel
(b) Nail
(c) Hair
Answer:
(a) Tooth enamel

Question 9.
…………………… is secreted by the salivary glands.
(a) Mucus
(b) Saliva
(c) Cilia
Answer:
(b) Saliva

Question 10.
It is necessary for the body to get a continuous supply of ………………… .
(a) oxygen
(b) nitrogen
(c) carbon dioxide
Answer:
(a) oxygen

Question 11.
When the diaphragm moves …………….. we breathe in.
(a) upward
(b) sideways
(c) downward
Answer:
(c) downward

Question 12.
The food we eat is ………………….. in our body.
(a) mixed
(b) churned
(c) digested
Answer:
(c) digested

Question 13.
The teeth, tongue and saliva all help to convert food into a soft moist ball called a …………………………. .
(a) bolus
(b) cilia
(c) saliva
Answer:
(a) bolus

Question 14.
As a result of respiration, …………………. enters the blood in the body and spreads to all parts of the body.
(a) carbon
(b) sulphur
(c) oxygen
Answer:
(c) oxygen

Question 15.
The process of keeping the blood flowing through all parts of the body is called ……………….. circulation.
(a) body
(b) blood
(c) oxygen
Answer:
(b) blood

Question 16.
As long as we are alive, the process of blood ………………… goes on continuously, day and night.
(a) respiration
(b) circulation
(c) co-ordination
Answer:
(b) circulation

Question 17.
Maintaining the co-ordination of the different functions in the body is the function of the ……………… .
(a) lung
(b) nerves
(c) brain
Answer:
(c) brain

Question 18.
A network of ………………… carry messages to and fro between the brain and the parts of the body.
(a) nerves
(b) blood vessels
(c) muscles
Answer:
(a) nerves

Question 19.
The brain and the network of nerves are together called the ………………. system.
(a) circulatory
(b) nervous
(c) respiratory
Answer:
(b) nervous

Define the following or Explain the terms:

Question 1.
System
Answer:
A group of organs that carry out similar functions in the body is called a system.

Question 2.
Blood circulation
Answer:
The process of keeping the blood flowing through all parts of the body is called blood circulation.

Question 3.
Digestion
Answer:
The process of converting food to simpler substances which can get mixed into blood easily is called digestion.

Question 4.
Respiration
Answer:
The process of entering of oxygen into the blood, so that it can be used to burn the food and release energy is called respiration.

Question 3.
Choose the appropriate word from the brackets:
(constipation, trachea, diaphragm, circulation, breathing, brain, enamel)

Maintaining co-ordination between various systems is its function.
When there is a tooth decay this is corroded a.
The process of inhaling oxygen and exhaling carbon dioxide.
Passing hard stool or not passing stool regularly.

Answer:

brain
enamel
breathing
constipation

Question (A)
Match the columns:

Group ‘A’	Group ‘B’
1. Mouth	(a) Excess water present is absorbed
2. Stomach	(b) Faeces collected
3. Small intestine	(c) Formation of bolus
4. Large intestine	(d) Food absorbed into the blood
5. Rectum	(e) Food changes to thin slurry

Answer:

Group ‘A’	Group ‘B’
1. Mouth	(c) Formation of bolus
2. Stomach	(e) Food changes to thin slurry
3. Small intestine	(d) Food absorbed into the blood
4. Large intestine	(a) Excess water present is absorbed
5. Rectum	(b) Faeces collected

Question 5.
Name the following:

An organ that pumps blood continuously.
An organ that maintains and co-ordinates the functioning of all the organ systems.
An organ that expels4faeces.
Organs which are affected by drinking alcohol for a long period of time.
A system that gives support and shape to the body.
A system that expels the waste substances that are formed in the body.

Answer:

Heart
Brain
Anus
Liver and Kidney
Skeletal System
Excretory System

Answer in one or two sentences:

Question 1.
Which organ helps us to enjoy many different tastes and flavours while having our meals?
Answer:
The tongue and the nose help us to sense the taste and flavours while having our meal.

Question 2.
Name the organs of the digestive system. (Use your brain power.)
Answer:
The organs of the digestive system are mouth, oesophagus, stomach, small intestine, large intestine, rectum, anus and all the other outside glands like salivary glands, liver and pancreas.

Question 3.
In which cavity of the body are the brain, lungs, heart and stomach situated and what is its function?
Answer:
The brain is situated in the cranial cavity, the heart and the lung is present the thoracic cavity and the stomach is present in the abdominal cavity. The bones present in the cavity protect these delicate organs.

Question 4.
Which bones protect the brain, heart and lungs and the stomach?
Answer:
The brain is protected by the skull, the heart and lungs are protected by rib cage as they are present inside it and the stomach is protected by strong muscles and by the rib cage.

Question 5.
How is faeces formed?
Answer:
When the digested food and water gets absorbed into the blood, and then what remains behind forms the faeces.

Question 6.
How many times do humans breathe per minute when resting or sitting comfortably?
Answer:
A healthy adult breathes 16-20 times per minute whereas a child of 6 months breathes 25-40 times per minutes and a child of 6-10 years breathes 18-25 times per minute.

Question 7.
How many times does one breathe after running a hundred metre race?
Answer:
When a person runs a race the breath rate is more than 16-20 times per minute for an adult and more than 18-25 times per minute for a child of 6 -10 years.

Give reasons:

Question 1.
Harmful substances like dust, smoke and microorganisms present in the air cannot reach the lungs.
Answer:
The inner lining of the nose has thin hair-like structures called cilia. This inner lining also secretes a sticky substance called mucus. The harmful substances like dust, smoke, micro-organisms etc. are filtered by the cilia and they get entangled in the mucus.

This then sticks to the inner lining of the nose. The cilia sometimes pushes these substances towards the nostril. This is then blown out by sneezing. Thus the harmful substances are prevented from entering the lungs.

Question 2.
Smoking for a long time reduces the efficiency of the lung.
Answer:
When one keeps smoking over a long period of time, the toxic substances in the smoke collect in the respiratory tract. The solid particles in this tobacco smoke form a sticky layer inside the alveoli. As these toxic substances get collected more and more, the exchange of gases like oxygen and carbon dioxide does not take place properly. Therefore, the efficiency of the lung decreases.

Question 3.
It is important to drink adequate quantities of water after eating.
Answer:
Water is absorbed through the alimentary canal and used for all processes. If one does not drink enough water digestion cannot take place properly, as food cannot keep moving properly. This will lead to constipation. Also water absorbed is used for the proper functioning of all other body processes. Therefore, it is important to drink adequate quantity of water.

Question 4.
We must not eat in a hurry and avoid speaking while eating.
Answer:
The upper ends of both the oesophagus and the windpipe open in the throat next to each other. When food is swallowed the wind pipe remains closed. If we eat in a hurry or speak while eating, food may enter the windpipe and cause us to choke. To avoid this from happening, we must not eat in a hurry or speak while eating.

Question 5.
It is dangerous to drive after drinking alcohol.
Answer:
Alcohol affects the nervous system. Hence when one drinks alcohol, one loses control over the movements of the body due to lack of co-ordination. Due to lack of co-ordination while driving when many accidents occur on the road, leading to loss of life. Therefore, it is dangerous to drive after drinking alcohol.

Use your brain power!

Question 1.
Describe which systems work together to provide the body with energy.
Answer:
The oxygen present in the inhaled air enters the blood due to the respiratory system. The food is digested and it also enters the blood due to the digestive system. The blood then flows to every part of the body due to circulatory system and it supplies the digested food and oxygen.

The food acts as fuel and it bums slowly in presence of oxygen releasing energy. This energy is then used by various parts of the body to do work. Thus the respiratory system, digestive system and circulatory system work together to provide the body with energy.

Answer the following questions:

Question 1.
Describe the process of digestion taking place in the stomach.
Answer:
The soft bolus which is swallowed enters the stomach through the oesophagus. Here the food is then churned. The digestive juices mix with this food and bring about some digestive process. At the same time disease producing . germs present in the food are destroyed. The food then changes into a thin slurry’ and passes into the small intestine.

Question 2.
How is food absorbed into the blood?
Answer:
The thin slurry formed in the stomach enters the small intestine. Many glands like liver, pancreas secrete their digestive juices into the small intestine. These secretions help in the digestive process. As a result of these processes, some substances which can easily mix with the blood are formed. These substances are then absorbed into the blood.

Question 3.
Give the functions of the following system, (a) Skeletal System (b) Nervous System (c) Excretory System.
Answer:
(a) Skeletal System gives support and shape to our body. They also protect the important organs like brain, heart, lungs, etc. present in our body.
(b) Nervous System: It helps to co-ordinate the functions of various systems. Thus it maintains the smooth functioning of all the systems.
(c) Excretory System: It helps to expel the waste produced in our body and helps in keeping us
healthy.

Question 4.
How do we inhale and exhale air?
Answer:
When the diaphragm moves down, the air is sucked inside the lung. Thus air is inhaled when diaphragm moves up the air inside the lung is pushed out. Thus the air is exhaled. The up and down movement of the diaphragm causes us to exhale and inhale air.

Question 5.
Draw neat and labelled diagram of:
(1) Respiratory system (2) Digestive system.
Answer:
1. Respiratory system
Maharashtra Board Class 5 EVS Solutions Part 1 Chapter 21 Busy at Work - Our Internal Organs 1

2. Digestive system
Maharashtra Board Class 5 EVS Solutions Part 1 Chapter 21 Busy at Work Our Internal Organs 2

Can you tell?

Question 1.
Name the organs that bring about respiration.
Answer:
The organs that help in respiration are, the nose, the trachea or wind pipe, the diaphragm and the lungs.

Question 2.
How do we know that we are hungry and that we should eat?
Answer:
When the food absorbed in the blood gets exhausted, after release of energy, the message reaches the brain via the network of nerves. Due to this, the brain then gets the signal that the body needs food. We realise we are hungry and we need to eat food.

Question 3.
How do the salivary glands come to know that there is food in the mouth and it is time to secrete saliva?
Answer:
When we eat food the nerve present in the nose and tongue send the message via the network of nerves to the brain. The brain then sends the message to the salivary gland to secrete the saliva. This is how the salivary glands comes to know that there is food in the mouth and it needs to secrete saliva.

Question 4.
What makes respiration and blood circulation go on all the time and the process of digestion happen at the right time?
Answer:
Our body needs energy to do work. Due to this our body requires a supply of oxygen continuously. Thus to supply oxygen continuously respiration goes on continuously. To carry oxygen to all the parts of the body continuously blood needs to circulate. Therefore circulation also needs to go on continuously. When energy is released the food absorbed in the blood gets exhausted. Through the network of nerves the brain gets the message and it signals us that we are hungry and we need to eat food.

The moment we eat food the nervous system brings about co-ordination between the digestive organs and digestion takes place at the right time. Thus respiration and blood circulation go on all the time and the process of digestion happens at the right time.

Glossary:

moist – slightly wet
churned – moved vigorously.
adequate – acceptable in quantity.
corroded – damaged
expels – forces out from body.
choke – difficulty in breathing
secretes -produces and discharges (a substance).
slurry – a semi-liquid mixture.

Class 5 Environmental Studies Questions and Answers: