Which one of the following is an example ex-situ conservation?
National park
Wildlife sanctuary
Seed bank
Sacred groves
Ex situ conservation is the conservation of specimens of biological origin outside their natural habitat. This concerns the conservation of genetic resources and wild and cultivated species. Seed banks store seeds as a source for planting in case seed stocks elsewhere are destroyed. It's a gene pool. The seeds stored can be food crops or rare species to preserve biodiversity. While in situ conservation is the preservation and maintenance of biological specimens in their natural habitat. Wildlife sanctuaries, sacred groves and national parks are examples of in situ conservation. Hence, option 3 is correct.