ATHENA GLOBAL SCHOOL
GRADE: VII QUESTION BANK SUBJECT: SCIENCE
CHAPTER 12 FORESTS: OUR LIFELINE
General Instructions:
1. This question bank contains short answer type I questions, short answer type II questions and long answer type
questions.
2. Students are encouraged to use the question bank for self-assessment, practice, and preparation of exams.
3. Ask if you need help.
Short Answer Type I Questions
1. List some animals which live in deeper areas of the forest.
2. Paheli while moving in a forest observed that there was no noise pollution, though lots of heavy vehicles were
passing from the nearby highway. Explain why. [NCERT Exemplar; HOTS]
3. Give the reason behind variations found in the forests of different regions.
4. Paheli wrote a food chain in the following way:
Frog → Eagle → Insects → Grass → Snake
The chain is not in the correct order. Help her to write the food chain correctly. [NCERT Exemplar]
5. Are there similar kinds of trees in every forest?
6. State the consequence when one food chain is disturbed in an ecosystem.
7. What is a canopy?
8. While going inside a forest, it becomes darker. Why?
9. A bunch of seedlings were seen sprouting on a heap of animal droppings in a forest. How do you think is the
seedling benefited from the animal dung? [NCERT Exemplar; HOTS]
10. Consider the following organisms:
Grass, birds, frog, crow, tiger, vulture, toadstool, deer.
Which of these:
(i) can eat the dead animals
(ii) can form a three-step food chain?
11. Give names of any four birds which you expect to see in a forest. [NCERT Exemplar]
12. Draw any simple food chain in a pond.
13. Name any four useful products other than wood, which we get from forests. [NCERT Exemplar]
14. Deforestation may lead to floods. Why? [NCERT Exemplar]
15. All the needs of animals living in a forest are fulfilled. Justify this statement in a few sentences. [NCERT
Exemplar; HOTS]
Short Answer Type II Questions
16. Forests are valuable resources. Explain.
17. Plants help in maintaining the O2-CO2 cycle. Explain it in the light of photosynthesis and respiration.
18. Forests are called green lungs. Why?
19. Two friends shared their experiences of their vacation trip to two different forests. Do you think they would have
seen the same type of plants and animals during their respective trips? Give reason. [HOTS]
20. Write differences between decomposers and scavengers.
21. What would happen if forests disappear?
22. Plants are known as the producers of a food chain. Give reason.
23. Life would be impossible without plants. Explain, how.
24. Y and Z are two types of organisms found in the forests. Y eats up dead animals, while Z breaks down the body
of the dead animals into simpler substances.
(a) What is the general name of organism Y?
(b) Write one example of Y type organism.
(c) What is the general name of organism Z?
(d) Write one example of Z type organism. [HOTS]
25. What happens when an animal dies in the forest?
26. Give any four factors which are responsible for the destruction of forests. [NCERT Exemplar]
27. Is it possible to construct a food chain without a producer? State the reason to support your answer.
28. How can a pipal sapling grow on the side wall of some old buildings?
29. If one component of the forest is removed, what would be its effect on the ecosystem?
30. State the role of scavengers in cleaning our environment.
31. Crown is different from canopy. Explain how.
32. “You conserve forests, you conserve soil.” Do you agree? Justify. [HOTS]
33. Deforestation can increase the earth’s temperature. Is it true? Give reason.
34. Explain how the root system of plants helps in the prevention of floods.
35. Sketch a diagram to show how plants maintain the balance between carbon dioxide and oxygen in the
atmosphere.
Long Answer Type Questions
36. People say that nothing goes waste in a forest. Can you explain how? [NCERT Exemplar; HOTS]
37. “Forest is a dynamic entity, full of life and vitality.” Explain briefly. [HOTS]
38. Write the major steps by which we can conserve the forest.
39. Figure shows a part of a forest.
Write any three activities going on in the forest on the basis of this figure. [NCERT Exemplar]
40. Cycling of papers helps in the conservation of forests. Justify.
41. Sachin lives in a village surrounded by a forest. One day, he noticed that sedimentation in a nearby pond had
increased so much that the water had become muddy, and streams were drying up. There was also a scarcity
of fuelwood. Realizing the issue, Sachin decided to raise awareness about protecting the forest and preventing
tree cutting. He involved nearby villagers and started an organization to take action.
(a) What changes might Sachin have noticed in his area?
(b) Give the probable reason for such changes.
(c) What values are shown by Sachin? [Value-Based Question]
42. A snake charmer came to a society and claimed to sense the presence of a cobra near the guardroom. The
head of the society agreed to let the man search for, capture, and take the snake away. However, little Krishi
disagreed and explained to the people that this might disturb the food chain in the environment.
(a) Describe a food chain.
(b) Construct a food chain involving a snake at one of its levels.
(c) What values are shown by Krishi? [Value-Based Question]
