Forests Our Lifeline - Worksheets

 CBSE Worksheet-01

Class – VII Science (Forests: Our Lifeline)

  1. Which of the following is not a forest product?
    1. Kerosene
    2. Rubber
    3. Plywood
    4. Sealing wax
  2. Microorganisms act upon the dead plants to produce
    1. Mushroom
    2. Humus
    3. Wood
    4. Sand
  3. Trees and vegetation act as wind breakers and prevents
    1. Floods
    2. Soil erosion
    3. Dust storm
    4. All of these
  4. Quinine is obtained from
    1. Eucalyptus tree
    2. Neem tree
    3. Cinchona tree
    4. Pine tree
  5. Match the following
    Column AColumn B
    a. Florai. Malaria
    b. Faunaii. Deforestation
    c. Natural Lungsiii. Plants
    d. Quinineiv. Forest
    e. Depletion of forestv. Animals
  6. Fill in the blanks.
    1. The process of loss of water from plants is called _______.
    2. _______ prevents soil erosion.
    3. Forest provides _______ like cinchona, eucalyptus etc.
    4. _______ help in maintaining water cycle in nature.
    5. Forest are important _______ resources.
  7. Write the ecological significance of forest?
  8. What is transpiration? How is it necessary?
  9. Write difference between food chain and food web?
  10. Give single words for the following description:
    1. Removal of top layer of earth crest.
    2. All the plants found in particular area.
    3. Loss of water in form of water vapour.
    4. Physiological process that balance oxygen level in atmosphere.
    5. Black, dead and decomposed parts of plant present in soil.
  11. Explain why there is no waste in a forest?

CBSE Worksheet-01
Class – VII Science (Forests: Our Lifeline)
Answer key

  1. a
  2. b
  3. d
  4. c
  5. (a) – (iii), (b) – (v), (c) – (iv), (d) – (i), (e) – (ii).
    1. Transpiration
    2. Plants
    3. Medicinal plants
    4. Forest
    5. Natural
  6. Forest help in balancing oxygen and carbon dioxide level in the atmosphere, regulate earth’s temperature and the water cycle.
  7. Loss of water in form of water vapour from the aerial parts of the plant is called transpiration. It helps in upward movement of water and maintaining temperature of plant parts.
  8. The process of eating and being eaten is called food chain. A number of organisms are interlinked for dependence of food. Food web is the network of a number of food chain connected together.
    1. Soil erosion
    2. Fauna
    3. Transpiration
    4. Photosynthesis
    5. Humus.
  9. There is no waste in a forest because micro-organisms act on the wastes and convert them to humus. This humus ensures that the nutrients are returned back to the soil.