Biodiversity and Conservation Test - 12

CES The Centre for Ecological Sciences, founded in 1983 with the support of the Ministry of Environment and Forests offers exciting opportunities for research in a variety of areas in ecology.

World Wetlands Day is celebrated every year on 2 February. This day marks the date of the adoption of the Convention on Wetlands on 2 February 1971, in the Iranian city of Ramsar on the shores of the Caspian Sea.

In 2014,  Indian ministry organised it’s celebrations at the chilka lake.

An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth.

Due to unchecked human activities, biologists suspect we’re living through the sixth major mass extinction. Earth has witnessed five, when more than 75% of species disappeared.

Glogal warming, greenhouse effect, deforestation, pollution of atmosphere, water and soil all contributing destruction of earth.

Edward Wilson coined the term biodiversity. Paul Ehlrich proposed Rivet Popper Hypothesis. A.V. Humboldt shows relation between species richness and explored area. Robert May estimated global species diversity.

Insects are essentially absent from the sea because insects respire using trachea from air.The species diversity on land is generally considerably higher than ocean therefore, statement ii is incorrect.

Classification of organisms are done on the basis of evolutionary hierarchy that is older organisms are classified first and recently evolved species later on.

Scavenger feeds on dead animal and plant material present in the habitat. Cleanliness observed by human beings will adversely affect the habitat of the scavengers.

Ecotourism is a form of tourism involving visiting fragile, pristine, and relatively undisturbed natural areas, intended as a low-impact and often small scale alternative to standard commercial mass tourism.

Conserving biodiversity provides a number of benefits along with contributaion to economy of the country by ecotourism. Large number of foreigner visit to diversity rich countries as tourist.

Invasive Non- Native Species are accidental or intentional introduction of exotic species to new areas. species that are non-native to a particular area can sometimes spread very quickly. Most do not establish or expand, but some do - likely because they are " released" from limitations imposed by their native predators, parasites, and competitors. in todays globalizing world, invasive species have become perhaps the second- worst threat to native biota. They might outcompete with native species. 

Endemism is the ecological state of a species being unique to a defined geographic location, such as an island, nation, country or other defined zone, or habitat type.

Notable endemics are the Nilgiri leaf monkey and the brown and carmine Beddome's toad of the Western Ghats.