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Q. No.| 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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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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| Statement I: | All members of A are heterotrophs. |
| Statement II: | The primary reason for the success of B on land is the presence of the reproductive organ, flower. |
1. Only Statement I.
2. Only Statement II.
3. Both Statement I and Statement II.
4. Neither Statement I nor Statement II.
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