Class 7 Science Chapter 17 MCQ

Class 7 Science Chapter 17 MCQ (Multiple Choice Questions) of Forests: Our Lifeline with explanation and answers of each questions updated for academic session 2021-2022. 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 2021-2022

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

MCQ Tests with Answers for Class 7 Science Chapter 17

Q1

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.
Q2

Micro-organism act upon the dead plants to produce:

[A]. Sand
[B]. Mushroom
[C]. Humus
[D]. Wood
Q3

Which among the following forest animal is the smallest?

[A]. Fox
[B]. Boar
[C]. Bison
[D]. Porcupine
Q4

Which of the following is not a forest product?

[A]. Gum
[B]. Plywood
[C]. Sealing wax
[D]. Kerosene
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 the name of a tree?

[A]. Teak
[B]. Sal
[C]. Porcupine
[D]. Kachnar
Q7

Consider the following statements and choose the incorrect one:

[A]. The plants are called producers.
[B]. The animals are called consumers.
[C]. Saprotrophs are commonly known as decomposers.
[D]. None of the above.
Q8

Pick the option which gives the names of a tree and animal respectively from the following:

[A]. Semal and hornbill
[B]. Sal and khair
[C]. Chinkara and blue bull
[D]. Neem and palash
Q9

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

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

Which of the products is not obtained from a forest?

[A]. Honey
[B]. Catechu
[C]. Gum
[D]. Ginger



Q11

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
Q12

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

[A]. Those animals which eat dead animals’ are called scavengers.
[B]. Scavengers eat up the dead bodies of animals and a help in keeping forest environment clean.
[C]. The important of humus to the soil is that it provides nutrients for the growth plants.
[D]. None of the above.
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

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

[A]. The various components of a forest are interdependent on one another.
[B]. An ecosystem is a self-sufficient unit of living things and non-living environment needing only the input of sunlight energy for its functioning
[C]. If we remove all the snakes from a forest then all the food chains in which snakes take part will be broken or affected.
[D]. All the above.




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 help in maintaining the supply of nutrients of the growing plants and trees in a forest?

[A]. Saprotrophs
[B]. Autotrophs
[C]. Carnivores
[D]. Heterotrophs
Q18

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
Q19

Which of the following do not help the flowering plants of a forest in pollination?

[A]. Honeybees
[B]. Butterflies
[C]. Kingfishers
[D]. Antelopes
Q20

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.



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

Consider the following statements and choose the incorrect one:

[A]. Destruction of forests can change the earth’s climate.
[B]. Destruction of forests leads to the extinction of many wild animals and plants.
[C]. Destruction of forests affects the water cycle leading to reduction in rainfall.
[D]. Destruction of forests will prevent flooding of rivers, loss of life and property.
Q23

Boojho appeared in class test but he confused to know the correct statement. Would you help him to know that?

[A]. Forests are cut down to obtain wood for making paper.
[B]. Forests are cut down to clear land for cultivation of crops in agriculture.
[C]. Forests are cut down to clear land for the construction of roads, houses, industries and dams etc.
[D]. All the above.
Q24

Puja is writing some statements but she confused to know whether the statements are correct or not? If you know the answer to this question, then tell her:

[A]. Forests prevent soil erosion and floods and hence help in the conservation of soil.
[B]. Forests help in maintain water cycle in nature and hence bring sufficient rain.
[C]. Forests also maintain the balance between carbon di oxide and oxygen in the atmosphere.
[D]. None of the above.
Q25

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.

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