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प्रश्न
The extinction of passenger pigeon was due to ______.
विकल्प
Increased number of predatory birds.
Over exploitation by humans
Non- availability of the food
Bird flu virus infection
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उत्तर
The extinction of passenger pigeon was due to over exploitation by humans.
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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.
With the help of any one example explain Alien species invasion as one of the causes of Biodiversity losses.
Enlist any six categories into which a given species is placed once it has been thoroughly evaluated by IUCN.
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 |
______ refers to the conservation of endangered species outside their natural habitats.
Which among the following is a TRUE statement?
Threatened species are those which ______.
What do you understand by ‘exotic species’?
Which of the following is not a cause for loss of biodiversity?
Match the following columns.
| Column - I | Column - II |
| (i) Dodo | (a) Africa |
| (ii) Ouagga | (b) Russia |
| (iii) Thylacine | (c) Mauritius |
| (iv) Stellar's sea cow | (d) Australia |
Choose the correct match from the following
What is common to the following plants: Nepenthes, Psilotum, Rauwolfia and Aconitum?
Name any two biodiversity hot spots in India.
"Forests provide intangible benefits to us." Explain by taking three different areas, how.
The species placed in CR category is ______.
Many species like Stellar's Sea cow and passenger pigeon have been driven to the brink of extinction. Which of the following describes this situation?
Mention any two places where the ex-situ conservation is undertaken.
Damage to biodiversity takes place due to natural reasons which includes the following EXCEPТ:
