- 1(current)
Q. No.While heat gain or heat loss is the function of ________, heat production is the function of _______ of the body of an animal.
1. Volume; Surface area
2. Surface area; Volume
3. Volume; Volume
4. Surface area; Surface area
Identify the correct statement:
| 1. | Eutrophic lakes contain fewer nutrients than oligotrophic lakes. |
| 2. | Xerarch succession is a primary succession that occurs in water bodies. |
| 3. | Most ecologists believe that most communities achieve stable, unchanging climax vegetation. |
| 4. | A mature ecosystem has greater species richness, greater biomass, and less net productivity than a younger stage of succession. |
| Assertion (A): | Mammals with smaller body size find thermoregulation more challenging than those with larger body size. |
| Reason (R): | Mammals with smaller body size are ectotherms and mammals with larger body size are endotherms. |
| 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
The threat of extinction will be highest for:
| 1. | a very small population in an unstable environment |
| 2. | a moderate-sized population of r strategists |
| 3. | a large population with lots of genetic variabilities |
| 4. | a moderate sized population in a stable environment |
Consider the given statements:
| I: | Very small animals are rarely found in the polar regions. |
| II: | Mammals from colder climates have shorter ears and limbs. |
| 1. | Both I and II are correct and II explains I. |
| 2. | Both I and II are correct but II does not explain I. |
| 3. | I is correct but II is incorrect. |
| 4. | Both I and II are incorrect. |
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Under a particular set of selection pressures, organisms evolve towards the most efficient:
| 1. | Thermoregulation | 2. | Water conservation |
| 3. | Respiration | 4. | Reproduction strategy |
What will happen to a well-growing herbaceous plant in the forest if it is transplanted outside the forest in a park?
| 1. | It will grow normally |
| 2. | It will grow well because it is planted in the same locality |
| 3. | It may not survive because of changes in its microclimate |
| 4. | It grows very well because the plant gets more sunlight |
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Populations and species of larger size are found in colder environments, while populations and species of smaller size are found in warmer regions. This is:
| 1. | Allen’s rule | 2. | Hesse’s rule |
| 3. | Allee effect | 4. | Bergman’s rule |
Salt concentration (Salinity) of the sea measured in parts per thousand is:
1. 10-15
2. 30-70
3. 0-5
4. 30-35
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- 1(current)
Q. No.
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