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| 1. |
Explain classification of plants and animals by IUCN? |
| Answer» (i) Normal species : species whose population levels are considered to be normal for their survival, such as cattle, sal, pine etc.(ii) Endangered species : are those which are on the verge of extinction.For examples-lndian wild ass, Indian rhino, sangai.(iii) Vulnerable species : are those whose population has declined to levels from where it is likely to move into the endangered category in the near future if the negative factors continue to operate.Examples-Asiatic elephant, Gangetic dolphin.(iv) Rare species : are those with small population which move into the endangered or vulnerable species if the negative factors continue to operate.Examples-Himalayan brown bear, wild Asiatic buffalo.(v) Endemic species : are those species which are found in some particular areas which are usually isolated by natural or geographical barriers.Examples-Nicobar pigeon, Andaman wild pig, Mithun in Arunachal Pradesh.(vi) Extinct species : are those which are not found to exist in a country, continent or the earth.Examples-Asiatic Cheetah, pink headed duck. | |