CBSE Biology Ecology And Environment Test 3 Online Mcqs Question Answers
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CBSE Biology Ecology and Environment Test 3 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.
  • CBSE Board Exams.
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Ecology and Environment test paper preparation for CBSE Board Biology examinations according to the latest syllabus prescribed for current session. Our topic is Ecology includes the study of interactions that organisms have with each other, other organisms, and with abiotic components of their environment. It is an interdisciplinary field that includes biology, geography, and Earth science. Ecologists study the interactions between organisms and their environment, and how these interactions affect where, and in what numbers, different types of organisms knowledge. CBSE official take this subject examinations from their affiliated boards.

Following test take online for more preparation and boost your level.

CBSE Biology Ecology and Environment Test 3 Online


1. The greatest biomass of autotrophs in the world's oceans is that of?

Question 1 of 30

2. In which one of the following pair is the specific characteristic of soil not correctly matched?

Question 2 of 30

3. Choose the correct match

Bladder worth, sundew, venus fly trap?

Question 3 of 30

4. Mycorrhiza is an example of?

Question 4 of 30

5. Special kinds of roots called pneumatophores are characteristics of the plants growing in?

Question 5 of 30

6. Diffuse porous woods are characteristic of plants growing in?

Question 6 of 30

7. If by radiation all nitrogenous enzymes are inactivated then there will be no?

Question 7 of 30

8. In which condition the gene ratio remains constant for any species?

Question 8 of 30

9. An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having?

Question 9 of 30

10. Species are considered as?

Question 10 of 30

11. In which one of the following habitats does the diurnal temperature of soil surface vary most?

Question 11 of 30

12. Which of the following is a correct pair?

Question 12 of 30

13. In 1984 the Bhopal gas tragedy took place because methyl isocyanate?

Question 13 of 30

14. Which of the following is absent in polluted water?

Question 14 of 30

15. Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example?

Question 15 of 30

16. Recently Govt. of India has allowed mixing of alcohol in petrol. What is the amount of alcohol permitted for mixing in petrol?

Question 16 of 30

17. More than 70% of world's fresh water is contained in?

Question 17 of 30

18. Escherichia coli is used as an indicator organism to determine pollution of water with?

Question 18 of 30

19. There is no life on moon due to absence of?

Question 19 of 30

20. Which of the following is not true for a species?

Question 20 of 30

21. Which of the following is expected to have the highest value (gm/m2 /yr) in a grassland ecosystem?

Question 21 of 30

22. Which type of association is found in between entomophilous flower and pollinating agent?

Question 22 of 30

23. Relative Biological Effectiveness (RBE) usually refers to the damages caused by?

Question 23 of 30

24. Which of the following is not used for disinfection of drinking water?

Question 24 of 30

25. Which one of the following pair is mismatched?

Question 25 of 30

26. What is the intensity of sound in normal conversation?

Question 26 of 30

27. What is BOD?

Question 27 of 30

28. Two different species cannot live for long duration in the same niche or habitat. This law is?

Question 28 of 30

29. Fluoride pollution mainly affects?

Question 29 of 30

30. Prolonged liberal irrigation of agricultural fields is likely to create the problem of?

Question 30 of 30


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