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Detailed explanation-1: -Kolkata became the first major metropolitan city in India to prepare a detailed register of biodiversity, Mayor Firhad Hakim claimed recently. Hakim May 21 unveiled the 520-page documentation of 399 plant and 283 animal species at the Kolkata Municipal Corporation (KMC) headquarters. The species include: 138 trees.

Detailed explanation-2: -Q. Which is the first major metropolitan city in India to prepare a detailed register of biodiversity? Notes: Kolkata recently became the first major metropolitan city in India to prepare a detailed register of biodiversity. The People’s Biodiversity Register (PBR) includes 399 plant and 283 animal species.

Detailed explanation-3: -Peoples’ Biodiversity Register is a document which contains comprehensive information on locally available Bio-resources including landscape and demography of a particular area or village.

Detailed explanation-4: -Kolkata Metropolitan Area (abbreviated KMA; formerly Calcutta Metropolitan Area), also known as Greater Kolkata, is the urban agglomeration of the city of Kolkata in the Indian state of West Bengal. It is the third most populous metropolitan area in India after Delhi and Mumbai.

Detailed explanation-5: -Biodiversity is referred to as the variation of plant and animal species in a particular habitat. Species evenness and species richness form the major components of biodiversity. India is known for its rich biodiversity and has around 24.46% of the geographical area covered by forests and trees.