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

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

2. The main contributors of acid rain are:

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

4. Competition between the members of different species is:

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

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

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

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

9. The decomposed dead animals and plants called:

10. Burning of fossil fuels results in:

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

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

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

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

15. Bacteria and fungi are:

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

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

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

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

20. The main cause of acid rain is: