The Aichi Biodiversity Targets were adopted in Nagoya, Japan in 2010.

Manipulation Forest Zone is a part of a buffer zone where forest may be formed by plantation and selective tree-falling is allowed. Buffer zone lies outside the core area.

Statement c is incorrect as biodiversity hotspots are geographic areas that contain high levels of species diversity, but are threatened with extinction.

This is the correct answer as all these reasons are correct for many species to become endangered.

Humbodtia decurrens Bedd is a very rare endemic tree of Southern Western Ghats (India).

This is the correct answer as this statement is incorrect. The more the variety of species in an ecosystem, the more stable the ecosystem is likely to be.

The Government of India, along with 155 other nations, signed the Convention of Biodiversity at Earth Summit held at Rio de Janeiro, Brazil in June 1992. This is the correct answer.

Extinction vertex is a combination of genetic and demographic factors.

The extinction abetted by human activities is called anthropogenic extinction.

The famous ornithologist of India is Salim Ali. He was among the first Indians to conduct systematic bird surveys across India and his bird books helped develop ornithology.

Sukhna Wildlife Sanctuary, spreading over an area of 2600 hect, is situated 1 km to the North-East of Sukhna Lake. It forms the part of Sukhna Lake catchment area falling in the Shivalik Hills.

The Biological Diversity Act, 2002 is an act of the Parliament of India for the preservation of biological diversity in India and provides mechanism for equitable sharing of benefits arising out of traditional biological resources and knowledge. The Act was enacted to meet the obligations under Convention on Biological Diversity (CBD), to which India is a party.

The number of wildlife sanctuaries set up in India at present is over 515, so the closest option is 500.

5^th June is celebrated as World Environment Day.

National parks are forests and surrounding areas established for the protection and propagation of the flora and fauna where no human activity inside the buffer or core zones is allowed.

Guindy Deer Park also works for the conservation of snakes. One can see king cobra, pythons, vipers and other reptiles there.

The large variation is on account of genetic diversity.

The 2012 conference of IUCN was held in Jeju, Republic of Korea. IUCN’s list of threatened species is called the Red List.

Of about ten million species probably alive today, some 20 species are lost everyday, most of them unknown because no more than half a million have been actually identified. This statement provides the best estimate of world’s biological diversity among the options provided.

The process of protecting an endangered plant or animal species in its natural habitat is commonly known as 'in situ conservation'.