What is cryopreservation ? Mention how it is used in conservation of biodiversity.
Cryopreservation is the technique in which viable and fertile gametes are preserved at a freezing temperature of around -196 degree Celsius in liquid nitrogen.
Gametes of threatened species are preserved in viable and fertile conditions for long periods using cryopreservation techniques, 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.