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प्रश्न
Explain the concept of "co-extinction" by taking two examples.
What is co-extinction? Explain with a suitable example?
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उत्तर
When a species becomes extinct, the plant and animal species associated with it, in an obligatory way, also become extinct, e.g., when a host fish species becomes extinct, its parasites also vanish. This is called co-extinction. Some other examples of co-extinction are, plant-pollinator mutualism where the extinction of one leads to the extinction of the other and monophagous insect that feeds on particular plant species becomes extinct due to extinction of that plant species.
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संबंधित प्रश्न
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/are the type( s) of extinction of species?
Currently, ______ mass extinction is considered to be the progressing at an alarming rate due to the loss of biodiversity.
'The Evil Quartet' is a concept which describes the ______.
Which among the following is an in situ conservation method for national genetic resources?
Accroding to IUCN Red list, the status of Antilope is ____________.
Which of the following statements is correct?
Which of the following is/are endangered plant species?
Which of these is NOT amongst the effects of loss of biodiversity?
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.
List any two major causes other than anthropogenic causes of the loss of biodiversity.
Gametes of threatened species can be preserved in viable and fertile conditions for long periods using ______.
What is the sustainable use of resources?
Western Ghats have a large number of plant and animal species that are not found anywhere else. Which of the following terms will you use to notify such species?
Decline in the population of Indian native fishes due to introduction of Clarias gariepinus in river Yamuna can be catogoriesd as ______.
What is ex-situ conservation?
Mention any two places where the ex-situ conservation is undertaken.
The IUCN Red Data List (2004) in the last 500 years documents the extinction of nearly 784 species including ______.
The sixth extinction in progress currently is different from all previous extinctions on earth as it is ______.
