Question

The liquid used to preserve embryo during test tube baby technique

• A. Glycerol
• B. PEG
• C. Liquid nitrogen
• D. None of the above

Answer 1

Answer: (C)

Liquid nitrogen

Cryopreservation is the preservation of cells and tissue by freezing. This is carried out by storage of the tissues in liquid nitrogen at -196${}^o$ C. The embryo which is formed during the test tube baby technique can be stored and preserved in this liquid nitrogen till the embryo is transferred in the womb of the mother. The low temperature prevents the reactions and there is no degradation and damage caused to the tissues.

Thus, the correct answer is option C.