Explanation:

Functional base of BSI was further expanded to include various new areas such as
Inventorying of endemic, rare and threatened plant species; evolving conservation strategies; studies
on fragile ecosystems and protected areas, like wildlife sanctuaries, national parks and biosphere
reserves, multiplication and maintenance of endemic and threatened plant species, wild ornamentals,
etc., in Botanic Gardens and Orchidaria; documentation of traditional knowledge associated with
plants and development of National Database of herbarium specimens/live collection/ botanical
paintings/ illustrations, plant distribution and nomenclature, plant uses, etc.

Over the successive plan periods functions of ZSI have also expanded gradually
encompassing areas like the Environmental Impact Assessment with regard to fauna; survey of
conservation areas; status survey of endangered species; computerization of digitization of data on
faunal resources; Environmental Information System (ENVIS) on faunal diversity; identification and
advisory services; National Designated Repository of type and voucher specimens; supporting
enforcement of Wildlife (Protection) Act, 1972; establishment of marine aquaria and Museum for
awareness on conservation etc. and acts as a custodian of the National Zoological Collections.