- 1(current)
Q. No.Which one of the following is not a major characteristic feature of biodiversity hotspots?
1. A large number of species
2. Abundance of endemic species
3. Mostly located in the tropics
4. Mostly located in the polar regions
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Which of the following continents has the highest biodiversity?
| 1. | South America | 2. | Africa |
| 3. | Europe | 4. | Asia |
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Which of the below-mentioned regions exhibit less seasonal variations?
| 1. | Tropics | 2. | Temperate |
| 3. | Alpines | 4. | Both (1) & (2) |
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| Assertion (A): | Large islands near the mainland will have more species than smaller islands more distant from the mainland. |
| Reason (R): | The species richness of an island is determined by colonization and extinction. |
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
Given below are the characteristics used in explaining higher biodiversity in tropics. Identify the one/s that is/are correctly matched:
|
I. |
More speciation |
Less seasonal, constant environment |
|
II. |
Niche specialization |
Latitudes undisturbed for millions of years |
|
III. |
Higher productivity |
More solar energy is available |
| 1. | Only III | 2. | Only I and III |
| 3. | II only | 4. | None are correctly matched |
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The following graph shows the species-area relationship. Regression coefficient if shown by:
| 1. | S | 2. | C |
| 3. | Z | 4. | log S |
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Consider the two statements:
I. Biological control by an introduced control can affect biodiversity.
II. An introduced control does not always target only the intended pest species; it can also target native species.
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.
The high level of species diversity of the tropics can be due to all of the following except:
| 1. | predictability | 2. | predation |
| 3. | spatial homogeneity | 4. | high productivity |
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- 1(current)
Q. No.
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