Biosphere Test Online

1. Which of the following is biodegradable ?

2. "Green House Effect" means ?

3. The most dangerous consequence of excessive deforestation is ?

4. Light emitted by sun reaches earth in ?

5. Nutrients are recycled in the atmosphere with the help of certain micro- organisms referred to ?

6. Biodegradable wastes can usually be converted into useful substances with the help of ?

7. The main factor which determines the balance of nature is ?

8. A microscopic organism playing a vital role in nitrogen cycle is ?

9. The study of relation of animals and plants to their surrounding is called ?

10. If all the plants of the World die, all the animals will also die due to shortage of ?

11. Nitrogen fixation is done by ?

12. Which of the following fuels causes minimum environmental pollution ?

13. The crop most susceptible to frost is ?

14. The largest source of pollution in the world is ?

15. Which amongst the following pairs of organisms represents predator- prey relationship ?