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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
Substantiate with the help of one example that in an ecosystem mutualists
are also one of the major causes of biodiversity loss.
Enlist any six categories into which a given species is placed once it has been thoroughly evaluated by IUCN.
______ refers to the conservation of endangered species outside their natural habitats.
Species that possess a very high risk of extinction due to population decline of about 30 - 50 % over past 10 years are categorized as _______.
Which one of the following is a natural cause of extinction of flora and fauna?
What are the major factors that are responsible for the loss of biodiversity? What steps are needed to prevent them?
Explain as to how protection of biodiversity hot spots alone can reduce up to 30% of the current rate of species extinction.
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?
Name any two biodiversity hot spots in India.
Which of the following suits hotspots in ecological terminology?
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 ______.
What are the reasons for loss of biodiversity?
Which one of the following is NOT one of the 'Evil Quartet' responsible for the loss of biodiversity?
These are regarded as major causes of biodiversity loss:
- Over exploitation
- Co-extinction
- Mutation
- Habitat loss and fragmentation
- Migration
Choose the correct option:
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.
Damage to biodiversity takes place due to natural reasons which includes the following EXCEPТ:
