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प्रश्न
Suggest two practices giving one example of each, that help protect rare or threatened species.
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उत्तर
- By using cryopreservation (preservation at –196ºC) technique, sperm, eggs, tissues, and embryos can be stored for a long period in gene banks, seed banks, etc.
- Plants are propagated in vitro using tissue culture methods.
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?
Give any 'two' examples of endangered species
Dodo bird, stellar sea cow and passenger pigeon are few examples of extinction due to ______.
______ refers to the conservation of endangered species outside their natural habitats.
Species that possess a very high risk of extinction due to population decline of about 30 - 50 % over past 10 years are categorized as _______.
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 statements is correct?
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:
How can you, as an individual, prevent the loss of biodiversity?
List any three major causes of loss of biodiversity.
When a species goes extinct in one area, it is often desirable to re-introduce the species from other populations. A major problem with this approach is that ______.
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.
Which one of the following is a pair of endangered species?
The IUCN Red Data List (2004) in the last 500 years documents the extinction of nearly 784 species including ______.
Give definitions of Extinct species.
Give definitions of Endangered species.
Name any two factors responsible for the loss of biodiversity in a geographical region.
