India has 18 notified biosphere reserves, which are large areas of terrestrial, coastal, or marine ecosystems designated by the Ministry of Environment, Forest and Climate Change to conserve biodiversity while promoting sustainable development and supporting local communities.
These reserves often include core zones (strictly protected), buffer zones, and transition zones.
Of these, 13 are internationally recognized as part of UNESCO’s World Network of Biosphere Reserves (WNBR) under the Man and the Biosphere (MAB) Programme.
The 5 non-UNESCO reserves (Manas, Dibru-Saikhowa, Dihang-Dibang, Great Rann of Kutch, Seshachalam) are nationally notified and under consideration for WNBR inclusion. MRS D2

Nilgiri is the only one shared by three states.
Agasthyamalai and Achanakmar-Amarkantak are shared by two states.

Great Rann of Kutch is the largest.
Dibru-Saikhowa is the smallest.

Which is the latest BR to be added to WNBR, and is famous for which species?

Cold Desert BR is India’s only high-altitude cold desert biosphere reserve (altitude 3,300–6,600 m),
Located in Spiti valley in Lahaul-Spiti district.
Famous for the Snow Leopard.

Which Biosphere Reserve was in the news recently because of unprecedented winter forest fires?

Which one of the following National Parks lies completely in the temperate alpine zone? (UPSC CSE 2019)
(a) Manas National Park
(b) Namdahpa National Park
(c) Neora Valley National Park
(d) Valley of Flowers National Park

Let us continue -

Indian Wild Ass is a flagship species of which BR?

Do you guys know the second largest tiger reserve in India?

UNFCCC
COP 31 - Turkey and Australia
COP 32 - Ethiopia

South Korea may host as COP 33 host has to be from Asia Pacific region.

Let us continuw with revision of BR -

Maximum population of Dugongs is associated with which BR?

Which BR is associated with Shompen tribe?