One of these is not concerned with wild life conservation.

If the Bengal tiger becomes extinct,

In the following,each set provides a conservation approach and an example of a method of conservation:
$(a)$ In situ conservation - Biosphere Reserve
$(b)$ Ex situ conservation - Sacred groves
$(c)$ In situ conservation - Seed bank
$(d)$ Ex situ conservation - Cryopreservation
Select the option with the correct match of approach and method.

Kaziranga is famous for:

Tiger is not a resident in which one of the following national parks?

$A$: Biosphere reserves are also included under the ex-situ conservation strategies.
$R$: Cropping and grazing are allowed in the transition zone of biosphere reserve.