What is common to the techniques (i) in vitro fertilisation, (ii) Cryopreservation and (iii) tissue culture?

Options

A. All are in situ conservation methods.
B. All are ex situ conservation methods.
C. All require ultra modern equipment and large space.
D. All are methods of conservation of extinct organisms.

Answer

B

Explanation

All the three above mentioned techniques are ex-situ conservation methods. At present gametes of threatened species can be preserved in viable conditions for longer duration by cryopreservation method (at very low temperature `-196^(@)` C).
Fertilisation can be achieved in laboratory-in vitro, and species can be improved or propagated by tissue culture method, a plant breeding principle.