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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
______ refers to the conservation of endangered species outside their natural habitats.
Which among the following is a TRUE statement?
Currently, ______ mass extinction is considered to be the progressing at an alarming rate due to the loss of biodiversity.
Which among the following is an exception to invasive species?
Which one of the following is a natural cause of extinction of flora and fauna?
Threatened species are those which ______.
What do you understand by ‘exotic species’?
Which of the following are major causes of species losses in a geographical region?
IUCN means
What does 'Red' indicate in the IUCN Red list (2004)?
List any two major causes other than anthropogenic causes of the loss of biodiversity.
Explain the concept of "co-extinction" by taking two examples.
The species placed in CR category is ______.
Match the species in Column I with its category in Column II.
| Column I | Column II |
| A. Rare species | I. No species |
| B. Vulnerable species | II. Facing a high risk of extinction |
| C. Endangered species | III. Localised species |
| D. Extinct species | IV. Species under threat |
Choose the correct answer from the options given below.
Mention any two places where the ex-situ conservation is undertaken.
Which one of the following is a pair of endangered species?
Which one of the following groups faces maximum threat of extinction?
Name any two factors responsible for the loss of biodiversity in a geographical region.
