- 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
Which of the following continents has the highest biodiversity?
| 1. | South America | 2. | Africa |
| 3. | Europe | 4. | Asia |
Which of the below-mentioned regions exhibit less seasonal variations?
| 1. | Tropics | 2. | Temperate |
| 3. | Alpines | 4. | Both (1) & (2) |
| 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 |
The following graph shows the species-area relationship. Regression coefficient if shown by:
| 1. | S | 2. | C |
| 3. | Z | 4. | log S |
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 |
- 1(current)
Q. No.
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