What is biodiversity hotspot Class 8?

What is biodiversity hotspot answer?

A biodiversity hotspot is a biogeographic region with significant levels of biodiversity that is threatened by human habitation. … Biodiversity hotspots host their diverse ecosystems on just 2.4% of the planet’s surface, however, the area defined as hotspots covers a much larger proportion of the land.

What is a biodiversity hotspot simple?

There are currently 36 recognized biodiversity hotspots. These are Earth’s most biologically rich—yet threatened—terrestrial regions. To qualify as a biodiversity hotspot, an area must meet two strict criteria: Contain at least 1,500 species of vascular plants found nowhere else on Earth (known as “endemic” species).

What are biodiversity hotspots Ncert?

Biodiversity hotspots are the regions with very high levels of species richness and high degree of endemism. Three hotspots – Western Ghats and Sri Lanka, Indo-Burma and Himalaya – cover high biodiversity regions.

Why is it called biodiversity hotspots?

Biodiversity Is Unevenly Distributed Around the Globe. With the enormous number of species that exists on Earth, it is remarkable that the distribution of these species is so highly concentrated in specific areas. … These areas that are particularly important for biodiversity conservation are called biodiversity hotspots …

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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.

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 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 biodiversity hotspot Class 12?

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. The British biologist Norman Myers gave the term “biodiversity hotspot” in 1988.

What are hotspots explain the spots of India?

Biodiversity Hotspots in India – Himalayas, Indo-Burma, Western Ghats & Sundaland. … Coined by Norman Myers, the term “Biodiversity hotspots” can be defined as the regions which are known for their high species richness and endemism.

What are biodiversity hotspots PDF?

It host about 7% of global flora(47,000 plant species) and 6.5% of fauna (81,000 species of animal). Some of the biodiversity criteria are as follows: 1) Endemism: India shows a good number of endemic species. About 62% of amphibians and 50% of lizards are endemic to India.

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What is hotspot in biology?

Ecological hotspots are areas with outstanding biodiversity or a high concentration of biological values. These values can refer to threatened or endemic species, unique ecosystems, or globally important numbers of a particular species.

What is biodiversity hotspot quizlet?

A Biodiversity Hotspot is an area containing a huge number of species, a large percentage of which are endemic.

Where are biodiversity hotspots?

Seven 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.