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

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

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

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

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

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

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

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

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

9. It is an essential constituent of protein.

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

11. All biogeochemical cycles are closely interlinked with:

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

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

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

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

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

17. Acid rain causes damage to:

18. Burning of fossil fuels results in:

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

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