The DAV Class 3 Science Book Solutions and DAV Class 3 Science Chapter 4 Question Answer – Importance of Plants are essential study tools for DAV public school students in Class 3.
DAV Class 3 Science Chapter 4 Question Answer – Importance of Plants
DAV Class 3 Science Ch 4 Question Answer – Importance of Plants
Something To Know
A. Fill in the blanks.
Question 1.
Plants are ______ to us in many ways.
Answer:
useful
Question 2.
Garlic and ginger plants are also used to make ______
Answer:
medicines
Question 3.
Plants give out ______ gas during day time.
Answer:
oxygen
Question 4.
People who cut down trees should be ______
Answer:
punished
Question 5.
All living things need oxygen gas for ______
Answer:
breathing.
B. Write True or False for the following statements.
1. We must protect plants to survive on the earth.
2. Fallen leaves can be burnt.
3. We should encourage deforestation.
4. Only a few of us need to try to increase the number of plants and trees.
5. Plants give us food only.
Answer:
1. We must protect plants to survive on the earth. (True)
2. Fallen leaves can be burnt. (False)
3. We should encourage deforestation. (False)
4. Only a few of us need to try to increase the number of plants and trees. (False)
5. Plants give us food only. (False)
C. Tick (✓) the correct option.
1. They are an important gift of nature,
(a) Toys
(b) Plants
(c) Cars
(d) Mobiles.
Answer:
(b) Plants
2. Plants give us
(a) Wool
(b) Wood
(c) Egg
(d) Butter.
Answer:
(b) Wood
3. Efforts need to be made to protect forests from
(a) Fires
(b) Rains
(c) air
(d) Animals.
Answer:
(a) Fires
D. Answer the following Questions in brief.
Question 1.
In which forms do we get food from plants?
Answer:
We get food from plants in the form of fruits, vegetables, pulses and grains.
Question 2.
How do plants help the soil?
Answer:
Plants help to bind the soil.
Question 3.
What is deforestation? Is it good or bad for all of us?
Answer:
Cutting of trees to clear forest is called deforestation. Deforestation is not good for us.
E. Answer the following Questions.
1. List any four uses of plants.
Answer:
Four uses of plants are as follows:
- Plants give use food in the form of fruits, vegetables, pulses and grains.
- Wood from plants is used for making furniture and other useful items.
- Plants help in binding the soil.
- Plants help in bringing rain.
2. How do plants act as air purifiers?
Answer:
Plants give out oxygen in daytime. Thus, plants act as air purifiers.
3. Suggest three ways that can help to conserve plants.
Answer:
Following are some ways which can help to conserve plants:
(a) We should not cut trees.
(b) We should promote afforestation.
(c) We should protect the forests.
Value Based Questions
Questions 1.
State the values displayed by Neha and her father.
Answer:
Neha and her father showed concern for environment.
Questions 2.
Why, do you think, Neha’s mother appreciated the saplings as a gift?
Answer:
Her mother must be a nature lover. So, she appreciated the saplings as a gift.
Questions 3.
Suggest how one can take care of the saplings planted by him/her.
Answer:
The saplings should be watered on a regular basis. It should be kept in sunshine. The soil in the flower pot should be turned over from time to time.
Questions 4.
Think of more occasions when you can gift a sapling to someone.
Answer:
We can gift a sapling to someone on birthday, on earth day and also on Van Mahotsav.
DAV Class 3 Science Chapter 4 Solutions – Importance of Plants
I. Multiple Choice Questions (MCQs)
1. Which of the following is obtained from plants?
(a) Paper
(b) Glass
(c) Plastic.
Answer:
(a) Paper
2. Plants give out which gas during daytime?
(a) Nitrogen
(b) Oxygen
(c) Hydrogen.
Answer:
(b) Oxygen
3. Wood is used for making which of the following?
(a) Jacket
(b) Screwdriver
(c) Furniture.
Answer:
(c) Furniture
4. Which of the following is celebrated to promote afforestation?
(a) VanMahotsava
(b) Tree Mahotsava
(c) Forest Mahotsava.
Answer:
(a) Van Mahotsava
5. Which of the following comes from plants?
(a) Cereals
(b) Pulses
(c) Both ‘a’ and ‘b’.
Answer:
(c) Both ‘a’ and ‘b’.
II.Fill in The Blanks:
Questions 1.
Plants give us ______ in the form of fruits, vegetables and grains.
Answer:
food
Questions 2.
______ help in bringing rain.
Answer:
plants
Questions 3.
Plants help to bind the ______
Answer:
soil
Questions 4.
Cutting of trees on large scale is called ______
Answer:
deforestation
Questions 5.
Forest ______ are harmful for forests.
Answer:
fires.
III. Write True/False:
1. Plants are not important for us.
2. Wood is used for making many items.
3. Plants give out nitrogen gas during daytime.
4. Plants act as air purifiers.
5. Plants do not bind the soil.
Answer:
1. Plants are not important for us. (False)
2. Wood is used for making many items. (True)
3. Plants give out nitrogen gas during daytime. (False)
4. Plants act as air purifiers. (True)
5. Plants do not bind the soil. (False)
IV. Short Answer Questions
Answer the following Questions in one sentence:
Question 1.
Food from plants comes in which form?
Answer:
Food from plants comes in the form of fruits, vegetables, pulses and grains.
Question 2.
Furniture is usually made from which item?
Answer:
Furniture is usually made from wood.
Question 3.
What is the purpose of celebrating Van Mahotsava?
Answer:
Van Mahotsava is celebrated to promote afforestation.
Question 4.
Plants help in increasing the amount of which gas in the air?
Answer:
Plants help in increasing the amount of oxygen in air.
V. Picture Based Question
Question 1.
Look at the following figures and circle the food which comes from plants. Cross the food which comes from animals.
Answer:
Do it yourself.
DAV Class 3 Science Chapter 4 Notes – Importance of Plants
→ Uses of Plants:
- Plants give us food in the form of fruits, vegetables, pulses and grains.
- Wood from plants is used for making furniture and other useful items.
- Plants give out oxygen in daytime. Thus, plants act as air purifiers.
- Plants help in bringing rain.
- Plants help to bind the soil.
→ Conservation of Plants: Plants are important gift of nature. We must conserve plants.
→ Deforestation: Cutting of trees to clear forest is called deforestation.
→ Afforestation: Planting new trees is called afforestation.
→ Van Mahotsava: A festival which is celebrated to promote afforestation.
→ Places with less plants slowly become deserts.
→ Places with more plants get more rain and have cool weather.