1.

Describe different methods of Ex-situ conservation

Answer»

In ex – situ conservation the threatened species of plants and animals are taken out of their natural habitat and placed in special settings where they can be protected and given special care.

(1) Zoological parks –

The places where many animals that have become extinct in the wild, continue to be maintained.

(2) Botanical gardens –

The place where many endangered and threatened species of plants are kept. It allows other plants which are used for reference or project purposes. In India there are 35 botanical gardens.

(3) Cryopreservation – 

It is the storage of materials at ultra low temperature of -196°C either by rapid cooling or by gradual cooling and simultaneous dehydration at low temperature.

(4) Tissue culture and micro propagation – 

This method is used for preserving the germplasm and growing a number of plants from small parts of organs.

(5) Seed banks –

Seeds of different genetic varieties of commercially important plants can be kept for long periods.



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