Man and His Environment – Online MCQs – Biology 10th

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

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

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

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

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

6. The decomposed dead animals and plants called:

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

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

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

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

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

12. All biogeochemical cycles are closely interlinked with:

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

14. The main cause of acid rain is:

15. Burning of fossil fuels results in:

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

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

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

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

20. The main contributors of acid rain are: