Online MCQs Test – Man and His Environment – Biology 10th

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

2. All biogeochemical cycles are closely interlinked with:

3. Burning of fossil fuels results in:

4. It is an essential constituent of protein.

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

6. Graphic presentation of members of the population in an area at different trophic levels is called

7. The main contributors of acid rain are:

8. The main cause of acid rain is:

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

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

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

12. The growth and life processes of living organisms require about:

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

14. Competition between the members of different species is:

15. A kind of spiral-shaped bacteria, spirochaete, living between our teeth to obtain food is a good example of:

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

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

18. Enzyme activities of metabolic reactions are also altered with the changes in:

19. The decomposed dead animals and plants called:

20. Bacteria and fungi are: