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

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

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

5. Competition between the members of different species is:

6. The amount of solid waste or concentration of gases other than oxygen increase in the atmosphere is called:

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

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

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

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

11. Burning of fossil fuels results in:

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

13. The decomposed dead animals and plants called:

14. All biogeochemical cycles are closely interlinked with:

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

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

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

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

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

20. Acid rain causes damage to: