Updated on June 13, 2023
by Tiwari Academy
by Tiwari Academy
Class 7 Science Chapter 12 MCQ (Multiple Choice Questions) of Forests: Our Lifeline with explanation and answers of each questions updated for academic session 2026-27. 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 12 MCQs cover all the concepts of the chapter.
Class 7 Science Chapter 12 MCQ for 2026-27
| Class: 7 | Science |
| Chapter: 17 | Forests: Our Lifeline |
| Contents: | MCQ Online Tests With Answers |
MCQ Tests with Answers for Class 7 Science Chapter 17
Q1
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
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 has the strongest stem?
[A]. A tree
[B]. A creeper
[C]. A climber
[D]. A bush
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 plantsโ 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
Which types of organism always occurs at the first step in every food chain?
[A]. Heterotroph
[B]. Autotroph
[C]. Saprotroph
[D]. Scavenger
Q9
Which of the products is not obtained from a forest?
[A]. Honey
[B]. Catechu
[C]. Gum
[D]. Ginger
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
The branchy part of a tree above the stem is known as:
[A]. Crown
[B]. Canopy
[C]. Sapling
[D]. Humus
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
Read the following sentences carefully, and choose the incorrect one:
[A]. Those animals which eat dead animalsโ 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.
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 is not a function of the crowns of forest trees during the daytime?
[A]. Absorb sunโs light energy
[B]. Absorb oxygen from air
[C]. Carry out photosynthesis
[D]. From a green cover
Q18
Which of the following do not help the flowering plants of a forest in pollination?
[A]. Honeybees
[B]. Butterflies
[C]. Kingfishers
[D]. Antelopes
Q19
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.
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
Consider the following statements and choose the incorrect one:
[A]. Destruction of forests can change the earthโs 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
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.
Q24
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
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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Last Edited: June 13, 2023
