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

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

2. Burning of fossil fuels results in:

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

4. The group of organisms that belongs to the same species live in a particular area called:

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

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

7. The decomposed dead animals and plants called:

8. The main contributors of acid rain are:

9. Presentation of a number of individuals or amount of biomass or energy in various trophic levels from lower to a higher level is:

10. The association between two different types of organisms which get benefit to each other, cannot live without each other is called:

11. The group of populations that lives in a particular area of habitat and interacts with each other is called:

12. The main cause of acid rain is:

13. Bacteria and fungi are:

14. Competition between the members of different species is:

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

16. Process of converting nitrogenous compound into free nitrogen called:

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

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

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

20. It is an essential constituent of protein.