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

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

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

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

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

5. Competition between the members of different species is:

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

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

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

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

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

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

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

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

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

15. It is an essential constituent of protein.

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

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

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

19. The main cause of acid rain is:

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