Question

Which one of the following is ex-situ conservation methods for endangered species?

• A. Wildlife Sanctuaries
• B. Biosphere Reserves
• C. Cryopreservation
• D. National parks

Answer 1

Answer: (C)

Preservation at $-{\left(196\right)}^o\left(liquid{N}_2\right)$ can maintain tissue culture, embryos, animal cells/tissues, spermatozoa, etc., which is called cryopreservation. It is an ex-situ conservation method, i.e., conservation of organisms outside their natural homes. Other ex-situ conservation methods are off-site collection and gene banks.