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

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

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

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

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

5. Burning of fossil fuels results in:

6. The main cause of acid rain is:

7. The decomposed dead animals and plants called:

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

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

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

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

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

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

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

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

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

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

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

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

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