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Forests: Our Lifeline Worksheet

Objective Type Questions

  1. Fill in the blanks:
    Microorganisms which convert dead plants and animals to humus are called________.

  2. Match the following:

  3. Find the odd one out:
    Tulsi, Rubber, Eucalyptus, Neem

  4. State whether the given statement is true or false:
    Vultures are decomposers.

    Multiple Choice Questions

  5. Organisms which provide food to all animals in the forests, directly or indirectly, are known as
    (a) Autotrophs
    (b) Heterotrophs
    (c) Saprotrophs
    (d) Decomposers

  6. Which of the following can be included in an ecosystem?
    (a) (i), (ii), (v) and (vi)
    (b) (iii) and (iv)
    (c) (i), (iii) and (iv)
    (d) All of these 

  7. Smaller trees and tree saplings form the understorey layer of the forest. The understorey layer lies
    (a) below the herb layer
    (b) below the shrub layer
    (c) below the canopy
    (d) above the herb layer

  8. Which of the following is NOT an advantage of forests?
    (a) Maintains water cycle in nature
    (b) Maintains a balance of CO2 and O2 in the atmosphere 
    (c) Makes soil infertile for crops
    (d) Prevents the occurrence of floods  

  9. Which of the following will eat the dead bodies of other animals?
    (a) Bacteria
    (b) Jackal
    (c) Lion
    (d) Tiger

    Subjective Questions

  10. How do forests act as purifiers of water and air?

  11. Explain how various components of a forest are interdependent.

  12. Nothing ever goes waste in a forest. Explain.

  13. Draw four shapes of tree crown found in forests.

  14. Forests are known to be green lungs. Give reason.

  15. Arrange the following images in the correct order as per the food chain occurring in the forest habitat (Put appropriate arrows between the alphabet letters assigned to each image to show the correct order of the food chain)

  16. How do forests help in reducing noise pollution?

  17. State the difference between a creeper and a climber.

    Assertion-Reasoning Questions

    Below questions consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:

  18. Assertion: Plants are saprotrophs. 
    Reason: Plants are producers. 

  19. Assertion: The forest is a dynamic living entity.
    Reason: The wide variety of plants and animals helps the forest to regenerate and grow.   

    Case-Based Questionsy


    The above picture shows the different layers of the forest. Answer the following questions based on it:
    (a) What is present in the uppermost layer of the forest? What is this layer of vegetation called?
    (b) Name the vegetation layer between the shrub layer and the forest floor in a forest.
    (c) What does layer 2 consist of? Name this layer.
    (d) What forms layer 3 of vegetation in a forest?  


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