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Question 1 of 30
1. Question
Assertion: Vegetarian food habit is more beneficial to organisms.
Reason: Only 10% energy is available as food from one trophic level to next.CorrectIncorrect -
Question 2 of 30
2. Question
In natural ecosystems, decomposers include-
CorrectIncorrect -
Question 3 of 30
3. Question
The percentage of solar radiation absorbed by all the green plants for the process of photosynthesis is about-
CorrectIncorrect -
Question 4 of 30
4. Question
The second trophic level is always of-
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Question 5 of 30
5. Question
The decomposers in an ecosystem-
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Question 6 of 30
6. Question
Which of the following is an abiotic component of an ecosystem?
CorrectIncorrect -
Question 7 of 30
7. Question
What will happen if all the deer are killed in the given food chain?
Grass → Deer → LionCorrectIncorrect -
Question 8 of 30
8. Question
Which of the following is not a terrestrial ecosystem-
CorrectIncorrect -
Question 9 of 30
9. Question
In the garden ecosystem, which of the following are producers?
CorrectIncorrect -
Question 10 of 30
10. Question
Which of the following is biodegradable?
CorrectIncorrect -
Question 11 of 30
11. Question
Which of the following is an autotroph?
CorrectIncorrect -
Question 12 of 30
12. Question
Which of the following is a logical sequence of food chain
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Question 13 of 30
13. Question
A food chain comprising birds, green plants, fish and man. The concentration of harmful chemical entering the food chain will be maximum in
CorrectIncorrect -
Question 14 of 30
14. Question
Ozone layer is damaged by-
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Question 15 of 30
15. Question
In an ecosystem, herbivores represent
CorrectIncorrect -
Question 16 of 30
16. Question
Which one of the following will undergo fastest bio-degradation?
CorrectIncorrect -
Question 17 of 30
17. Question
Assertion: Biodegradable waste and non biodegradable waste should be discarded separately,
Reason: Biodegradable waste are not harmful.CorrectIncorrect -
Question 18 of 30
18. Question
Assertion: Ozone layer is getting depleted at upper atmosphere which is a cause of concern.
Reason: CFC reacts with ozone and breaks it.CorrectIncorrect -
Question 19 of 30
19. Question
Flow of energy in an ecosystem is always-
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Question 20 of 30
20. Question
The ecosystem of earth is known as-
CorrectIncorrect -
Question 21 of 30
21. Question
Which of the two in the following sets belong to the same trophic level?
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Question 22 of 30
22. Question
Acid rain is caused by the oxides of
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Question 23 of 30
23. Question
The depletion of the ozone layer causes
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Question 24 of 30
24. Question
Which one of the following pairs belong to the category of primary consumers?
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Question 25 of 30
25. Question
Which of the following is biodegradable?
CorrectIncorrect -
Question 26 of 30
26. Question
Which of the following is non-biodegradable-
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Question 27 of 30
27. Question
Trophic level in an ecosystem represents
CorrectIncorrect -
Question 28 of 30
28. Question
Excessive exposure to ultraviolet radiation causes
CorrectIncorrect -
Question 29 of 30
29. Question
Which of the following limits the number of trophic levels in a food chain?
CorrectIncorrect -
Question 30 of 30
30. Question
A food chain always starts with
CorrectIncorrect