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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
Give any 'two' examples of endangered species
Substantiate with the help of one example that in an ecosystem mutualists
are also one of the major causes of biodiversity loss.
Acronym for IUCN is ____________.
Which among the following is/are the type( s) of extinction of species?
Currently, ______ mass extinction is considered to be the progressing at an alarming rate due to the loss of biodiversity.
Which of the following is not a cause for loss of biodiversity?
Explain as to how protection of biodiversity hot spots alone can reduce up to 30% of the current rate of species extinction.
What criteria should one use in categorizing a species as threatened?
List any two major causes other than anthropogenic causes of the loss of biodiversity.
Though the conflict between humans and wildlife started with the evolution of man, the intensity of conflict has increased due to the activities of modern man. Justify your answer with suitable examples.
How many Biodiversity hotspots have been identified around the world?
The species placed in CR category is ______.
Gametes of threatened species can be preserved in viable and fertile conditions for long periods using ______.
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 of the following regions of the globe exhibits highest species diversity?
Give definitions of Endangered species.
Give definitions of Invasive species.
Write any three criteria on which different types of reflexes are based.
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.
