CBSE Biology Ecology And Environment Test Online Question Answers
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CBSE Biology Ecology and Environment Test Online

Test Name Ecology and Environment Test
Subject CBSE Biology
Test Type MCQs
Total Question 30
Total Marks 60
Total Time 20 Minutes
Test Help For
  • CBSE Biology.
  • CBSE Board Exams.
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Complete preparation knowledge of CBSE exams Biology Ecology and Environment including in this test. Basic concept of our topic is that Ecology is the scientific analysis and study of interactions among organisms and their environment. Ecology includes the study of interactions that organisms have with each other, other organisms, and with abiotic components of their environment. Topics of interest to ecologists include the diversity, distribution, amount (biomass), and number (population) of particular organisms, as well as cooperation and competition between organisms, both within and among ecosystems.

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CBSE Biology Ecology and Environment Test Online


1. A mutually beneficial association necessary for survival of both partners are?

Question 1 of 30

2. Soil particles determine its?

Question 2 of 30

3. Bulk CO2 fixation occurs in?

Question 3 of 30

4. Pyramid of number in a pond ecosystem is?

Question 4 of 30

5. What is true of ecosystem?

Question 5 of 30

6. Food chain in which micro-organisms breakdown the food formed by primary producers are?

Question 6 of 30

7. Study of inter-relationships between living organisms and their environment is?

Question 7 of 30

8. Homeostasis is?

Question 8 of 30

9. Soil water available to roots is?

Question 9 of 30

10. In an ecosystem which one shows one-way passage?

Question 10 of 30

11. Acid rains are produced by?

Question 11 of 30

12. River water deposits?

Question 12 of 30

13. Domestic waste constitutes?

Question 13 of 30

14. Most hazardous metal pollutant of automobile exhausts is?

Question 14 of 30

15. Fish die in water bodies polluted by sewage due to?

Question 15 of 30

16. In a biotic community the most important factor for survival of an animal is?

Question 16 of 30

17. Which one is not a pollutant normally?

Question 17 of 30

18. Green-house effect is warming due to?

Question 18 of 30

19. Gas released during Bhopal tragedy was?

Question 19 of 30

20. Pyramid of numbers in a grassland/ true ecosystem is?

Question 20 of 30

21. A fertile agricultural soil appears dark colored at the surface as compared to soil one meter down. The reason for color of top soil is?

Question 21 of 30

22. Ultraviolet radiations from sunlight cause a reaction which produces?

Question 22 of 30

23. Upper part of sea/ aquatic ecosystem contains?

Question 23 of 30

24. Competition for light nutrients and space is most severe between?

Question 24 of 30

25. The relation between algae and fungi in a lichen is?

Question 25 of 30

26. Deep black soil is productive due to high proportion of?

Question 26 of 30

27. Soil best suited for plant growth is?

Question 27 of 30

28. Pyramid of number deals with number of?

Question 28 of 30

29. The sum total of the population of the same kind of organisms constitute?

Question 29 of 30

30. Major aerosol pollutant in jet plane emission is?

Question 30 of 30


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