Question

A red list of endangered species is maintained by
A. CSIR
B. IUCN
C. NEERI
D. WLS

Answer 1

It uses a group of criteria to judge the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. aims to have the count of the presence of each species re-evaluated every five years or at least every ten years.

Complete answer:
Endangered species are maintained by IUCN, founded in 1964. It is the world’s most comprehensive inventory of the worldwide conversation status of biological species. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are made by different countries or organizations, that assess the chances of extinction to species within a political management unit.
So, the right answer is option B-(IUCN).

Additional Information:-
The IUCN Red List is based on precise conditions to examine the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and each region of the world. The aim is to convey the urgent need for conservation issues to the general public and policy makers, as well as help the international community to spread the message to reduce species extinction. As per the IUCN, the formally stated goals of the Red List are to provide scientifically-based information on the status of species and subspecies at a worldwide level, to draw attention to the magnitude and importance of vulnerable and threatened biodiversity, to influence national and international policy and decision-making processes, and to provide proper information to guide actions to conserve biological diversity.

Note: Endangered species refer to those animals who are most likely to get extinct in the future, either worldwide or in a particular area or country. There are many endangered species such as Amur Leopard, Black Rhinoceros, Hawksbill sea turtle, and many more. With the loss of a species of organisms, the ecosystem starts falling apart, which indirectly is harmful to humans too. So we should take proper care of the Endangered species and try to prevent their extinction.