What are biodiversity hotspots Ncert?

Class 12 Biology: A biodiversity hotspot is a biogeographic region that has a significant pool of biodiversity but at the same time it is also threatened with destruction.

What defines a biodiversity hotspot?

Yet biodiversity hotspots are, by definition, in a conservation crisis. To be classified as a biodiversity hotspot, a region must have lost at least 70 percent of its original natural vegetation, usually due to human activity. … The Andes Mountains Tropical Hotspot is the world’s most diverse hotspot.

What is biodiversity hotspot Class 11?

The biodiversity hotspot is a geographical area where the biodiversity level is very high. These particular areas contain a large number of different species of animals, plants and microorganisms.

What are biodiversity hotspots in India 12?

Additional information: India has 4 biodiversity hotspots: The Himalayas, the Western Ghats, the Indo-Burma region and the Sundarland and it also includes the Nicobar group of Islands. These hotspots have lots of endemic species.

What is biodiversity hotspot in India?

Officially, four out of the 36 Biodiversity Hotspots in the world are present in India: the Himalayas, the Western Ghats, the Indo-Burma region and the Sundaland. To these may be added the Sundarbans and the Terrai-Duar Savannah grasslands for their unique foliage and animal species.

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What is biodiversity hotspot Class 10?

The Biodiversity Hotspot is a biogeographical area that is both a major source of biodiversity and is threatened with destruction. In general, the word biodiversity hotspot relates to 25 high biodiversity areas of the planet that have lost at least 70% of their original habitat.

What is biodiversity hotspot quizlet?

biodiversity hotspot. a large-scale area of biological and conservation importance that has over 1,500 species of endemic plants and has also lost over 70% of its original habitat. biome.

What biodiversity means?

The term biodiversity (from “biological diversity”) refers to the variety of life on Earth at all its levels, from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that sustain life.

What is hotspot short answer?

Hotspot: A hotspot is a physical location where people can access the Internet, typically using Wi-Fi, via a wireless local area network (WLAN) with a router connected to an Internet service provider. … While many public hotspots offer free wireless access on an open network, others require payment.

Where are biodiversity hotspots?

7 Biodiversity Hotspots You Should Know

  • The Caribbean Islands. …
  • The Atlantic Forest in Brazil. …
  • Southeast Asia. …
  • The Philippines. …
  • The Horn of Africa. …
  • Madagascar. …
  • The California Coast.

What is biodiversity class 12?

Biodiversity can be defined as the occurrence of different types of genes, gene pools, species, habitats and ecosystem in a given region. (i) The term biodiversity was given by a socio biologist Edward Wilson to describe the combined diversity at all the levels of biological organisation.

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What are hotspots of biodiversity give two example?

Hot spots are those regions of rich biodiversity which have been declared sensitive due to direct or indirect interference of human activities. 2. The three hotspots in India are Western Ghats, Indo-Burma region and Eastern Himalayas.

What are hotspots in India?

India hosts 4 biodiversity hotspots: the Himalayas, the Western Ghats, the Indo-Burma region and the Sundaland (Includes Nicobar group of Islands). These hotspots have numerous endemic species.

What is biodiversity hotspot and why is India considered as a mega biodiversity hotspot?

An area is known as a hotspot if it contains at least 0.5 per cent of endemic plant species. India is considered a mega-diversity hotspot due to the great diversity of organisms found here, ranging from eastern to western ghats to northern and southern India as well. Mainly Western ghats are now at high risk.

How many biodiversity hotspots are there?

There are 36 biodiversity hotspots on our planet, and these areas are dazzling, unique, and full of life. Plants, animals, and other living organisms that populate these places are rare and many of them are only found in these specific geographic areas.