Class 7 Science Chapter 17 MCQ (Multiple Choice Questions) of Forests: Our Lifeline with explanation and answers of each questions updated for academic session 2022-2023. All the MCQ tests are prepared from latest NCERT Textbooks based on new CBSE Syllabus. These MCQ online tests are important for school unit test as well as terminal or final exams. Class 7 science chapter 17 MCQs cover all the concepts of the chapter.

Class 7 Science Chapter 17 MCQ for 2022-2023

Class: 7Science
Chapter: 17Forests: Our Lifeline
Contents: MCQ Online Tests With Answers

MCQ Tests with Answers for Class 7 Science Chapter 17

Q1

Which of the following serve as green lungs?

[A]. Green pigment of the plants
[B]. Forests
[C]. Kitchen Gardens
[D]. Greenhouses gases
Q2

Consider the following statements and choose the correct one:

[A]. A forest is a large area of land covered mainly with trees and other plants.
[B]. Due to different climates and soils, there are various types of trees and other plants found in various forests.
[C]. The forest floor provides favorable conditions for seeds to germinate into seedlings and saplings.
[D]. All the above.
Q3

Boojho visited a forest near his town with his classmates and his teacher. As they were entering the forest, their class teacher told them not to make noise in the forest as in noise disturb the:

[A]. Birds
[B]. Animals
[C]. Both (a) and (b)
[D]. Plants
Q4

Which among the following forest animal is the smallest?

[A]. Fox
[B]. Boar
[C]. Bison
[D]. Porcupine
Q5

Paheli is writing some statements, choose the incorrect statement and help her:

[A]. A forest acts as the purifier of air and water.
[B]. The forest provides a home for many plants’ animals and decomposers organisms.
[C]. The forest also contains decomposers organisms such as bacteria and fungi.
[D]. None of the above.
Q6

Which of the following is not prepared from the wood obtained from forest?

[A]. Paper
[B]. Thermocol
[C]. Matchsticks
[D]. Plywood
Q7

Which of the following statements is not correct?

[A]. Forests protect the soil from erosion
[B]. Plants and animals in a forest are not dependent on one another
[C]. Forests influence the climate and water cycle
[D]. Soil helps forests to grow and regenerate
Q8

Which of the following is not the name of a tree?

[A]. Teak
[B]. Sal
[C]. Porcupine
[D]. Kachnar
Q9

Which types of organism always occurs at the first step in every food chain?

[A]. Heterotroph
[B]. Autotroph
[C]. Saprotroph
[D]. Scavenger
Q10

Boojho is doing his homework which is given by his teacher. Would you help him to choose the correct sentences?

[A]. The green plants provide food to all the animals in the forest, directly or indirectly.
[B]. The decomposers play a very important role in sustaining the forest.
[C]. Bacteria and fungi are non-green organisms which can not make their own food.
[D]. All the above.
Q11

One of the following is not produced by the action of decomposers on the dead parts of plants and dead bodies of animals. This one is:

[A]. Carbon di oxide
[B]. Oxygen
[C]. Water
[D]. Nutrients
Q12

Forests are not responsible for:

[A]. Providing medicinal plants
[B]. Maintaining the flow of water into the streams
[C]. Creating for flood conditions
[D]. Absorbing rainwater and maintaining water table
Q13

Which of the following is not a function of the forests?

[A]. Maintenance of water cycle
[B]. Bringing sufficient rains
[C]. Preventing flash floods
[D]. Causing soil erosion
Q14

Which of the following is not a scavenger?

[A]. Crow
[B]. Jackal
[C]. Lion
[D]. Vulture
Q15

Read the following sentences carefully, and choose the incorrect one:

[A]. The first step in every food chain is the plants.
[B]. The second step in a food chain is always a herbivore
[C]. The third step in a food chain is always a carnivore.
[D]. Scavengers are referred as decomposers.
Q16

In a science quiz competition, Payel are asked a question where she had to choose the statement which was/were incorrect?

[A]. The branchy part of a tree above the stem is known as the crown of the tree.
[B]. The layer of vegetation in a forest which is just below the canopy is called under story.
[C]. The uppermost branches and leaves of tall trees which act like a roof over the forest ground is called canopy.
[D]. None of the above.
Q17

Which of the following is not a function of the crowns of forest trees during the daytime?

[A]. Absorb sun’s light energy
[B]. Absorb oxygen from air
[C]. Carry out photosynthesis
[D]. From a green cover
Q18

Which of the following statement is or are correct?

[A]. The layer of vegetation in a forest which is just below the understorey, is called shrub layer.
[B]. The layer of vegetation in the forest which is just below the shrub layer, is called the herb layer.
[C]. The forest floor is also considered a layer of vegetation in the forest structure.
[D]. All the above.
Q19

Which of the following will help in the conservation of forest?

[A]. Recycling of jute bags
[B]. Recycling of cotton bags
[C]. Recycling of paper bags
[D]. Recycling of plastic bags
Q20

If forests disappear:

[A]. Amount of CO2 in air will increase.
[B]. Amount of CO2in air will decrease.
[C]. Amount of O2in air will increase
[D]. Amount of N2 in air will increase
Q21

Bikash is doing his homework which is given by his teacher. Would you help him to choose the correct sentences?

[A]. Scavengers are also a type of decomposers.
[B]. Dead animals and plants are the polluted agent of forest.
[C]. The growing of new trees and plants on their own regenerates the forest naturally.
[D]. As a scavenger lion eat up the dead bodies of animals and help in keeping forest environment clean.
Q22

In the last year board examination, Rahul were asked a question where he had to choose the statement which was/were incorrect? Will you be able to answer this question?

[A]. [A] Forests help in cleaning air and purifying water.
[B]. Forests provide food, water, shelter and medicine to the forest-dwelling people.
[C]. Forests provide a natural habitat to wild animals and birds and hence help in the conservation of wildlife.
[D]. Cutting down of forests is driving out many populations, which help many people to build houses, factories and bridge etc.
Q23

In a quiz competition, you are asked a question where you have to choose the statement which is/ are correct?

[A]. The cutting down of forest leads to soil erosion.
[B]. Cutting down of forest leads to the loss of many species of animals and birds.
[C]. The destruction of forests is also leading to the loss of many species of plants from this earth.
[D]. All the above
Q24

Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?

[A]. The cutting down of forest or deforestation leads to a decrease in rainfall.
[B]. The removal of fertile top soil from a region by wind, rain or river water is called soil erosion.
[C]. The roots of trees and plants growing in the forest bind the particles of topsoil and hold the soil together firmly.
[D]. None of the above.
Q25

In a science quiz competition, Paheli are asked a question where she had to choose the statement which was/were incorrect?

[A]. The various things which are obtained from the forest are called forest products.
[B]. The green plants and trees of the forest release oxygen during the process of photosynthesis.
[C]. Humus mixes up with the soil in the forest and the nutrients present in it are used for the growth of plants.
[D]. Green plants and trees of the forest supply oxygen for breathing and respiration, so forests are known as blue lungs.

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