Explain any three ways other than zoological parks, botanical gardens and wildlife safaries, by which threatened species of plants and animals are being conserved ‘ex situ’.

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Solution

Following are the three ways other than zoological parks, botanical gardens and wildlife safaries by which threatened species of plants and animals are being conserved 'ex-situ':-

1. Cryopreservation : It is technique by which gametes of threatened species can be preserved in viable and fertile condition for long periods at liquid nitrogen temperature $(- 196^{\circ} C) .$

2. Seed bank : It is one of the ex-situ conservation strategy in which seeds of different genetic strains of commercially important plant can be kept for long periods.

3. Tissue culture : It is a process by which part of plants can be propagated (micropropagation).

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