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. |
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). |
Amongst the vertebrates, the Class with maximum number of species is:
1. | Pisces | 2. | Reptilia |
3. | Aves | 4. | Mammalia |
If we consider invertebrates, the maximum global biodiversity, after insects, is seen in:
1. | Crustaceans | 2. | Echinoderms |
3. | Mollusks | 4. | Annelids |
A | B | C | |
1. | Insects | Echinoderms | Molluscs |
2. | Insects | Molluscs | Crustaceans |
3. | Crustaceans | Insects | Molluscs |
4. | Molluscs | Crustaceans | Insects |
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’. |
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. |