Question

What is common in the following techniques?
(i) in vitro fertilisation, (ii) cryopreservation and (iii) tissue culture.

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

Answer 1

The correct option is B All are ex-situ conservation methods

Ex situ conservation literally means "off-site conservation".

In in-vitro fertilization, egg and sperm are fertilized outside the female body in laboratory conditions. The embryo formed can then be frozen for storage or transferred to a woman's uterus.

The storage of sperms, pollen, tissue, or embryos in very low temperature like liquid nitrogen is called cryopreservation.

Similarly, tissue culture is a technique in which small fragments of a plant (explant) are introduced into an artificial nutrient medium, which allows its functioning or growth.

Hence, in vitro fertilisation, cryopreservation and tissue culture are used in ex-situ conservation of endangered species. All these methods require less space.