- 1(current)
Q. No.Assertion: In a food chain, members of successive higher levels are fewer in number.
Reason: Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.
1. Both Assertion & Reason are true and Reason is the correct explanation of Assertion
2. Both Assertion & Reason are true but Reason is not the correct explanation of Assertion
3. Assertion is true statement but Reason is false.
4. Both Assertion and Reason are false statements.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
| Column-I | Column-II | ||
| A. | Tansley | (i) | Gave the term ecology |
| B. | Ramdeo Mishra | (ii) | Father of ecology |
| C. | Reiter | (iii) | Correctly defined ecology |
| D. | Ernst Haeckel | (iv) | Gave the term ecosystem |
1. A = (i), B = (ii), C = (iii), D = (iv)
2. A = (iv), B = (ii), C = (i), D = (iii)
3. A = (ii), B = (i), C = (iv), D = (iii)
4. A = (iv), B = (ii), C = (iii), D = (i)
Consider the following statements
concerning food chains
i) Removal of 80% tigers from an area
resulted in greatly increased growth of
vegetation.
ii) Removal of most of the carnivores
resulted in an increased population of
deers.
iii) The length of food chains is generally
limited to 3 – 4 trophic levels due to energy loss.
iv) The length of food chains may vary from
2 to 8 trophic levels.
Which two of the above statements are
correct?
1. i and ii
2. ii and iii
3. iii and iv
4. i and iv
Reason(R): No energy that is trapped in an organism remains in it forever.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Death of organism is the beginning of the Grazing food chain/web.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
- 1(current)
Q. No.
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