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प्रश्न
Enlist any six categories into which a given species is placed once it has been thoroughly evaluated by IUCN.
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उत्तर
After a given species has been thoroughly evaluated, it is placed into one of following several categories.
- Extinct (EX): A designation applied to species in which the last individual has died or is not recorded.
- Extinct in the Wild (EW): A category containing those species whose members survive only in captivity.
- Critically Endangered (CR): A category containing those species that possess an extremely high risk of extinction with very few surviving members (50).
- Endangered (EN): A designation applied to species that possess a very high risk of extinction as a result of rapid population decline of 50 to more than 70 percent over the previous 10 years (or three generations).
- Vulnerable (VU): A category containing those species that possess a very high risk of extinction as a result of rapid population decline of 30 to more than 50 percent over the previous 10 years (or three generations).
- Near Threatened (NT): A designation applied to species that are close to becoming threatened or may meet the criteria for threatened status in the near future.
संबंधित प्रश्न
Substantiate with the help of one example that in an ecosystem mutualists
are also one of the major causes of biodiversity loss.
Which of the following are major causes of species losses in a geographical region?
Of the four major causes for the loss of biodiversity (Alien species invasion, habitat loss and fragmentation, over-exploitation and co-extinctions which according to you is the major cause for the loss of biodiversity? Give reasons in support.
How can you, as an individual, prevent the loss of biodiversity?
Gametes of threatened species can be preserved in viable and fertile conditions for long periods using ______.
Many species like Stellar's Sea cow and passenger pigeon have been driven to the brink of extinction. Which of the following describes this situation?
Which one of the following is a pair of endangered species?
Write any three criteria on which different types of reflexes are based.
Damage to biodiversity takes place due to natural reasons which includes the following EXCEPТ:
Which of the following species pairs are examples of 'Extinct in the Wild' (EW) category?
