write an account of in situ and ex-situ conservation
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Answer:
Ex-situ Conservation
In this type of conservation, the threatened animals and plants are taken out from their natural habitat and placed in a special area or location where they can be protected and given special care. For example - zoological parks, botanical gardens, wildlife safari parks, gene banks, germplasm banks, and seed banks.
Many animals have become extinct in the wild but few of them are kept in zoological parks. The gametes of threatened species can be preserved in viable, fertile conditions for long periods using cryopreservation techniques, In this, the eggs can be fertilized in vitro, and plants can be propagated using tissue culture methods. Seeds of different genetic strains of commercially important plants can be kept for long periods in seed banks.
B. In-situ Conservation
In this type of conservation method, species are protected in their natural habitat by making their habitats protected areas. For example- national parks, sanctuaries, biosphere reserves, etc.