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

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

2. Acid rain causes damage to:

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

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

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

6. Growth of algae with very high rate due to increase in phosphorous and nitrogen-containing compounds called:

7. The main contributors of acid rain are:

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

9. The elements in the ecosystem recycle through organisms with the environment is called:

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

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

12. Which of the following greenhouse gases is present in very high quantities?

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

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

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

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

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

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

19. The cold war between the organisms of a community occupying the same habitat is called:

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