NEET · Biology · STD 12 - 13. biodiversity and conservation

Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as

A in situ conservation by sacred groves
B in situ cryoconservation of biodiversity
C in situ conservation of biodiversity
D advanced ex situ conservation of biodiversity.

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Answer & Solution

Correct Answer

(D) advanced ex situ conservation of biodiversity.

Step-by-step Solution

Detailed explanation

(d) : Cryopreservation is an advanced method of ex situ conservation. It involves preservation at-\(196^°C\) in liquid nitrogen. It can maintain tissue culture, embryos, animal cells/tissues, spermatozoa indefinitely. The cryopreserved material is revived through special technique, when required.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match List \(I\) with List \(II\).

List \(I\) (Interacting species)	List \(II\) (Name of interaction)
\(A\). A Leopard and a Lion in a forest/grassland	\(I\). Competition
\(B\). A Cuckoo laying egg in a Crow's nest	\(II\). Brood parasitism
\(C\). Fungi and root of a higher plant in Mycorrhizae	\(III\). Mutualism
\(D\). A cattle egret and a Cattle in a field	\(IV\). Commensalism

Choose the correct answer from the options given below.

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