CBSE Worksheet for chapter-9 Natural Resources class 9

Worksheet For class 9

Find CBSE Worksheet for chapter-9 Natural Resources class 9

CLASS-9

BOARD: CBSE

BIOLOGY Worksheet - 9

TOPIC: Natural Resources

For other CBSE Worksheet for class 9 Science check out main page of Physics Wallah.

1. If there were no atmosphere around the earth, the temperature of the earth will
   1. Increase
   2. Go on decreasing
   3. increase during day and decrease during night
   4. Be unaffected
2. Which of the following is not an important factor for growth of plants ?
   1. Nutrient content of soil
   2. Distance of water body from the soil
   3. Amount of humus present in the soil
   4. Depth of soil
3. What would happen, if all the oxygen present in the environment is converted to ozone?
   1. We will be protected more
   2. It will become poisonous and kill living forms
   3. Ozone is not stable, hence it will be toxic
   4. It will help harmful sun radiations to reach earth and damage many life forms.
4. How are clouds formed?
5. What are the methods of preventing or reducing soil erosion?
6. Name two biologically important compounds that contain both oxygen and nitrogen.
7. Why is water essential for life?
8. Explain the role of lichens in pollution control.
9. How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?
10. Write a note on how forests influence the quality of our air, soil and water resources.