Q. No.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):
There is no limitation on the number of trophic levels in a detritus food chain.
Reason (R):
The transfer of energy between successive trophic levels in a detritus food chain does not follow the 10% rule.
In the light of the above statements, choose the most appropriate answer from the options given below :
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.
Both (A) and (R) are false.
- 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
- 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
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
| Assertion (A): | Strongly vertically stratified habitats are very stable ecosystems. |
| Reason (R): | Through the formation of different layers a given habitat is better utilized. |
| 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. | Both (A) and (R) are false. |
- 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
| Assertion (A): | Carnivores generally have higher assimilation efficiencies than herbivores. |
| Reason (R): | Carnivores generally consume more food than herbivores. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 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. | Both (A) and (R) are false. |
- 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
| Assertion (A): | Low temperature and anaerobiosis inhibit decomposition resulting in build-up of organic chemicals. |
| Reason (R): | Most decomposers are anaerobic psychrophiles. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 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. | Both (A) and (R) are false. |
- 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
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Sometimes the term "detritivore" is used interchangeably with:
| 1. | decomposers | 2. | primary consumers |
| 3. | secondary consumers | 4. | autotrophs |
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The minimum requirement for an ecosystem to recycle nutrients present in it would be:
| 1. | producers |
| 2. | producers and decomposers |
| 3. | producers, primary consumers, and decomposers |
| 4. | producers, primary consumers, secondary consumers, and decomposers |
The best way to describe an ecosystem would be that they are:
| 1. | processors of energy and transformers of matter. |
| 2. | processors of matter and transformers of energy. |
| 3. | processors of matter and energy. |
| 4. | transformers of matter but not of energy. |
The ecosystem that can survive in the absence of the Sun would be:
| 1. | tropical rainforest | 2. | tundra |
| 3. | benthic ocean | 4. | desert |
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The generation of biomass of heterotrophic (consumer) organisms in a system is termed:
| 1. | biogeochemical cycles | 2. | net primary productivity |
| 3. | gross primary productivity | 4. | secondary productivity |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Converting nitrate to nitrogen gas by anaerobes like Pseudomonas is:
| 1. | nitrogen fixation | 2. | ammonification |
| 3. | denitrification | 4. | eutrophication |
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