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प्रश्न
What criteria should one use in categorizing a species as threatened?
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उत्तर
The criteria that should be used in categorising a specials as threatened are
- Number of the members of the species is declining at an alarming rate.
- Their habitat is being modified or destroyed.
- Predator or poacher activities are increasing.
APPEARS IN
संबंधित प्रश्न
What are the major causes of species losses in a geographical region?
Can you think of a situation where we deliberately want to make a species extinct? How would you justify it?
Substantiate with the help of one example that in an ecosystem mutualists
are also one of the major causes of biodiversity loss.
Suggest two practices giving one example of each, that help protect rare or threatened species.
Very short answer type question
What do you understand by the EW category of a living being?
With the help of any one example explain Alien species invasion as one of the causes of Biodiversity losses.
The Red List of threatened species is published by ______.
Which among the following is a TRUE statement?
Accroding to IUCN Red list, the status of Antilope is ____________.
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
The extinction of passenger pigeon was due to ______.
Which of the following are major causes of species losses in a geographical region?
What is common to the species shown in figures A and B?
 |
 |
| A | B |
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.
Enlist two criteria that are used to identify a region for maximum protection as 'Biodiversity hotspots'.
Name any two biodiversity hot spots in India.
"Forests provide intangible benefits to us." Explain by taking three different areas, how.
Write any three criteria on which different types of reflexes are based.
Name any two factors responsible for the loss of biodiversity in a geographical region.
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.
