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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
What are the major causes of species losses in a geographical region?
Give any 'two' examples of endangered species
Species that possess a very high risk of extinction due to rapid population decline of about 50 - 70 % over three generations is designated as ______.
Acronym for IUCN is ____________.
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 in situ conservation method for national genetic resources?
Threatened species are those which ______.
Which of the following is not a cause for loss of biodiversity?
IUCN means
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:
There was a loss of biodiversity in the ecosystem due to a new construction project in that area. What would be its impact on the ecosystem? State any three.
Which of the following suits hotspots in ecological terminology?
What is the sustainable use of resources?
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?
What are the reasons for loss of biodiversity?
Name any two factors responsible for the loss of biodiversity in a geographical region.
