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प्रश्न
What criteria should one use in categorizing a species as threatened?
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उत्तर
The criteria that should be used in categorising a specials as threatened are
- Number of the members of the species is declining at an alarming rate.
- Their habitat is being modified or destroyed.
- Predator or poacher activities are increasing.
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संबंधित प्रश्न
Suggest two practices giving one example of each, that help protect rare or threatened species.
Match the following and choose the correct alternative.
| Column I | Column II | ||
| i. | Not evaluated | a. | Pervasive and abundant after careful assessment |
| ii. | Near threatened | b. | Information related to risk of extinction is lacking in some way |
| iii. | Least concern | c. | Described by scientist but not assessed by the IUCN |
| iv. | Data deficient | d. | May meet the criteria for threatened status in the near future |
Which among the following is an exception to invasive species?
Which among the following is an in situ conservation method for national genetic resources?
Threatened species are those which ______.
Which of the following is/are endangered plant species?
Which of the following are major causes of species losses in a geographical region?
Match the animals given in column I with their location in column II:
| Column I | Column II |
| A. Dodo | i. Africa |
| B. Quagga | ii. Russia |
| C. Thylacine | iii. Mauritius |
| D. Stellar's sea cow | iv. Australia |
Choose the correct match from the following:
List any two major causes other than anthropogenic causes of the loss of biodiversity.
How can you, as an individual, prevent the loss of biodiversity?
Though the conflict between humans and wildlife started with the evolution of man, the intensity of conflict has increased due to the activities of modern man. Justify your answer with suitable examples.
Decline in the population of Indian native fishes due to introduction of Clarias gariepinus in river Yamuna can be catogoriesd as ______.
Give definitions of Endangered species.
Give definitions of Invasive species.
Write any three criteria on which different types of reflexes are based.
Match List - I with List - IІ.
| List - I | List - II |
| A. The Evil Quartet | I. Cryopreservation |
| B. Ex-situ conservation | ΙI. Alien species invasion |
| C. Lantana camara | III. Causes of biodiversity losses |
| D. Dodo | IV. Extinction |
Choose the option with all correct matches.
When one species becomes extinct and another species closely associated with it also disappears, this phenomenon is called:
Which IUCN category describes species facing an 'extremely high risk of extinction in the immediate future'?
Which of the following is an example of a species in the 'Least Concern' (LC) IUCN category?
