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प्रश्न
Discuss one example, based on your day-to-day observations, showing how loss of one species may lead to the extinction of another.
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उत्तर
In case a species (x) becomes extinct, the plant and animal species (M, N, O, Z) associated within an obligatory way also become extinct. For example.
- When a fish species which is a host for a number of parasites becomes extinct the parasite species which are uniquely dependent on the host fish will also become extinct.
- The insects may be polyphagous (feed on more than one plant species) or monophagous (feed on only one particular plant species) in nature. The monophagous insect species are valuable and may become extinct if the plant species upon which it feeds becomes extinct.
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संबंधित प्रश्न
Give any 'two' examples of endangered species
Answer the following question:
Substantiate with the help of one example that in an ecosystem mutualists
(i) tend to co-evolve and
(ii) are also one of the major causes of biodiversity loss.
______ refers to the conservation of endangered species outside their natural habitats.
The Red List of threatened species is published by ______.
Which among the following is a TRUE statement?
Which one of the following is a natural cause of extinction of flora and fauna?
Which of the following is/are endangered plant species?
IUCN means
What is common to the following plants: Nepenthes, Psilotum, Rauwolfia and Aconitum?
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.
Explain the concept of "co-extinction" by taking two examples.
Which of the following suits hotspots in ecological terminology?
Gametes of threatened species can be preserved in viable and fertile conditions for long periods using ______.
What is ex-situ conservation?
Mention any two places where the ex-situ conservation is undertaken.
Write any three criteria on which different types of reflexes are based.
Which one of the following is NOT one of the 'Evil Quartet' responsible for the loss of biodiversity?
Which of the following pairs correctly represents examples of alien species invasion?
Which IUCN category is assigned to a species for which inadequate information is available for proper assessment?
