Q. No.
| 1. | Location of desert biomes on Earth |
| 2. | Hotspots of biodiversity |
| 3. | Sites of major earthquake disasters in the present century |
| 4. | Places on Earth where the threat to biodiversity is absent |
Match each item in Column I with one in Column II and choose the correct answer from the codes given below :
|
Column I |
Column II |
||
|
A |
Genetic diversity |
a. |
Western ghats have greater amphibian diversity than eastern ghats |
|
B. |
Species diversity |
b. |
India has more than 50000 genetically different strains of rice |
|
C. |
Ecological diversity |
c. |
India has more ecosystems than Norway |
Codes :
| A | B | C | |
| 1. | a | b | c |
| 2. | b | a | c |
| 3. | c | b | a |
| 4. | b | c | a |
| 1. | Genetic diversity | 2. | Species diversity |
| 3. | Ecological diversity | 4. | Biosphere diversity |
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| 1. | Biodiversity is the term popularised by the sociobiologist Edward Wilson to describe the combined diversity at all levels of biological organisation. |
| 2. | IUCN stands for International Union for Conservation of Nature and Natural resources. |
| 3. | Robert May places the global species diversity in the range of 20 to 50 million. |
| 4. | More than 25 percent of the drugs currently sold in the market are derived from the plants. |
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| Assertion (A): | Biologists make a statistical comparison of the temperate-tropical species richness of an exhaustively studied group of insects and extrapolate this richness to other group of animals and plants and come up with a gross estimate of the total number of species on earth. |
| Reason (R): | Insects are the most successful living organisms among animals and plants. |
| 1. | Both (A) and (R) are true but (R) does not explain (A). |
| 2. | (A) is true but (R) is false. |
| 3. | (A) is false but (R) is true. |
| 4. | Both (A) and (R) are true and (R) explains (A). |
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Approximately, what number of species have been identified, named and studied?
| 1. | 1.0 million | 2. | 1.5 million |
| 3. | 1.7 million | 4. | 2.0 million |
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Amongst the vertebrates, the Class with maximum number of species is:
| 1. | Pisces | 2. | Reptilia |
| 3. | Aves | 4. | Mammalia |
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If we consider invertebrates, the maximum global biodiversity, after insects, is seen in:
| 1. | Crustaceans | 2. | Echinoderms |
| 3. | Mollusks | 4. | Annelids |
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| A | B | C | |
| 1. | Insects | Echinoderms | Molluscs |
| 2. | Insects | Molluscs | Crustaceans |
| 3. | Crustaceans | Insects | Molluscs |
| 4. | Molluscs | Crustaceans | Insects |
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| Statement I: | ‘A’ group will be of fishes. |
| Statement II: | ‘B’ and ‘C’ are endotherms. |
| Statement III: | ‘D’ are more successful on land than ‘E’. |
2. Only Statement I and Statement III.
3. Only Statement II and Statement III.
4. Statement I, Statement II and Statement III.
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