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

Question 1 of 30

2. Which of the following is pollution related disorder?

Question 2 of 30

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

Question 3 of 30

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

Question 4 of 30

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

Question 5 of 30

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

Question 6 of 30

7. Phosphate pollution is mainly caused by?

Question 7 of 30

8. 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 8 of 30

9. Carbon monoxide is a pollutant because?

Question 9 of 30

10. Formation of ozone hole is maximum over?

Question 10 of 30

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

Question 11 of 30

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

Question 12 of 30

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

Question 13 of 30

14. Species restricted to a given area are called?

Question 14 of 30

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

Question 15 of 30

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

Question 16 of 30

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

Question 17 of 30

18. 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 18 of 30

19. The nature of climax community ultimately depends on?

Question 19 of 30

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

Question 20 of 30

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

Question 21 of 30

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

Question 22 of 30

23. 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 23 of 30

24. Which of the following is a secondary pollutant?

Question 24 of 30

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

Question 25 of 30

26. Green-house effect refers to?

Question 26 of 30

27. The plant which bears clinging roots is?

Question 27 of 30

28. Phenomenon of Industrial melanism demonstrates?

Question 28 of 30

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

Question 29 of 30

30. Keystone species in an ecosystem are those which?

Question 30 of 30


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