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

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

2. It is an essential constituent of protein.

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

4. In a given ecosystem various food chains are linked together and interact with each other to form a complete network called:

5. The main contributors of acid rain are:

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

7. Burning of fossil fuels results in:

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

9. A bird that gets its energy and food when it eats grasshopper or caterpillar is:

10. All biogeochemical cycles are closely interlinked with:

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

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

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

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

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

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

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

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

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

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