Man and His Environment – Online MCQs – Biology 10th

1. The transfer of food material from producers through some organisms with repeated eating and being eaten is called:

2. Any biological region recognized by its climate or vegetation is called:

3. An area where community interacts with non-living environment is called:

4. All the life on the earth is based on:

5. Conversion of atmospheric free nitrogen gas into nitrates called:

6. It is an essential constituent of protein.

7. Respiration consumes it for the combustion of food for release of energy.

8. The area where an organism lives is called its:

9. Acid rain causes damage to:

10. The term describes how the ecosystem is organized in a state of stability where species exist with other species and the environment.

11. The main contributors of acid rain are:

12. They are the primary source of energy for other organisms.

13. Process where the nitrogenous compound of living organism convert into nitrates is called:

14. Burning of fossil fuels results in:

15. Main cause of depletion of the ozone layer is the CFC used as the propellant in:

16. The life-sustaining envelop of the earth is:

17. It is an association between the two organisms of different species which live together.

18. The main cause of acid rain is:

19. One of the important constituent of protein and DNA.

20. Bacteria and fungi are: