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

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

2. The decomposed dead animals and plants called:

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

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

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

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

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

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

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

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

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

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

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

14. Presentation of a number of individuals or amount of biomass or energy in various trophic levels from lower to a higher level is:

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

16. Competition between the members of different species is:

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

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

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

20. Burning of fossil fuels results in: