Question

A hotspot of biodiversity in india is
  A. Eastern Ghats
  B. Western Ghats
  C. Gangetic plain
  D. Sunderbans

Answer 1

Hint: A biodiversity hotspot is a biogeographic region that is both a significant reservoir of biodiversity and is threatened with destruction. Hotspot of biodiversity are the areas which have a high density of biodiversity or megadiversity which are the most threatened points.

Complete Answer:
A. Eastern Ghats: Eastern Ghats are not a continuous chain of mountains. The rivers are wide when flowing through Eastern Ghats then its broken. They spread out forming deltas near the seas. Biodiversity hotspots are located only in tropical regions. Hence option A is incorrect.

B. Western Ghats: All over the world, twenty five terrestrial hotspots have been identified for the conservation of biodiversity. Out of these fifteen hotspots have the tropical forest. Nine hotspots are present in tropics.Out of twenty five hotspots of the world, four found in India. These are the Western Ghats and the Eastern Himalayas. Hence option B is correct.

C. Gangetic plain: It is also known as Indus-Ganga and the North Indian River Plain. The great northern mountain and peninsular plateau in between it lies. It is formed by three major rivers. Gangetic plain covers a large area of about in Northern and Eastern India. The plain is divided into three sections.It is not a hotspot. Hence option C is incorrect.

D. Sunderbans: Sundarbans, it contains the world's largest mangrove forests. It is one of the most biologically productive of all natural ecosystems. It is located at the mouth of the Ganges and Brahmaputra Rivers. The single largest population of tigers in the world is supported by the mangrove habitat. It is not a hotspot. Hence option D is incorrect.

Hence option B :Western Ghats is the correct answer.

Note: In india four ecological hotspots are presently identified. The eastern himalayas, the western ghats, the indo-burma region and the sundaland constitute the four biodiversity in india.