CBSE Biology Ecology And Environment Test 2 Online Question Answers
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CBSE Biology Ecology and Environment Test 2 Online

Test Name Ecology and Environment Test
Subject CBSE Biology
Test Type MCQs
Total Question 30
Total Marks 60
Total Time 25 Minutes
Test Help For
  • CBSE Biology.
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Study the relation between organisms and their environment, and Ecology in Bio called Ecology and Environment. In this topic we will complete our preparation of 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.

For more online education and study take following questions test’s in short time.

CBSE Biology Ecology and Environment Test 2 Online


1. The nature of climax community ultimately depends on?

Question 1 of 30

2. The response of different organisms to the environmental rhythms of light and darkness is called?

Question 2 of 30

3. Niche of a species in an ecosystem refers to its?

Question 3 of 30

4. Species restricted to a given area are called?

Question 4 of 30

5. The plant which bears clinging roots is?

Question 5 of 30

6. Formation of ozone hole is maximum over?

Question 6 of 30

7. Plants such as Prosopis, Acacia and Capparis represent example of tropical?

Question 7 of 30

8. Which one of the following organism is used as indicator of water quality?

Question 8 of 30

9. The most common indicator organism which represents polluted water is?

Question 9 of 30

10. The maximum bio magnification would be in which of the following in case of aquatic ecosystem?

Question 10 of 30

11. Which of the following is free-living aerobic non-photosynthetic nitrogen-fixing bacterium?

Question 11 of 30

12. Green-house effect refers to?

Question 12 of 30

13. Which important green-house gas other than methane is being produced from the agricultural fields?

Question 13 of 30

14. The rate at which light energy is converted into chemical energy of organic molecules is the ecosystem's?

Question 14 of 30

15. The CO 2 content by volume in the atmospheric air is about?

Question 15 of 30

16. Warm ocean surge of the peru current recurring every 5 to 8 year or so in the East Pacific of South America is widely known as?

Question 16 of 30

17. In coming years skin related disorders will be more common due to?

Question 17 of 30

18. Which of the following is pollution related disorder?

Question 18 of 30

19. Which part of the world has high density of organisms?

Question 19 of 30

20. In 1984 Bhopal gas tragedy was caused due to the leakage of?

Question 20 of 30

21. Temperature changes in the environment affect most of the animals which are?

Question 21 of 30

22. Phosphate pollution is mainly caused by?

Question 22 of 30

23. The transfer of energy from one trophic level to another is governed by the 2nd law of thermodynamics. The average efficiency of energy transfer from herbivores to carnivores is?

Question 23 of 30

24. Keystone species in an ecosystem are those which?

Question 24 of 30

25. Which of the following is a secondary pollutant?

Question 25 of 30

26. Which of the following ecosystem has the highest gross primary productivity?

Question 26 of 30

27. Carbon monoxide is a pollutant because?

Question 27 of 30

28. If there was no CO2 in the earth's atmosphere the temperature of earth's surface would be?

Question 28 of 30

29. A sewage treatment process in which a portion of the decomposer bacteria present in the waste is recycled into the beginning of the process is called?

Question 29 of 30

30. Phenomenon of Industrial melanism demonstrates?

Question 30 of 30


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