मराठी
Tamil Nadu Board of Secondary EducationHSC Science Class 12

Revision: Biodiversity and Its Conservation Zoology HSC Science Class 12 Tamil Nadu Board of Secondary Education

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Definitions [7]

Define Eutrophication.

Eutrophication: The process by which a body of water enriched in dissolved nutrients (such as phosphates) that stimulates the growth of aquatic algae usually resulting in the depletion of dissolved oxygen.

Define dichotomous key.

It is a tool used to classify organisms based on their similarities and differences.

Define Hotspots.

Hotspot is a biodegradable region that is both a significant reservoir of biodiversity and is threatened with destruction.

Define Biodiversity.

Biodiversity is defined as the variety of plant and animal life in the world or in a particular habitat, a high level of which is usually considered to be important and desirable

The sum total of species richness, i.e., the number of species of plants, animals and micro-organisms inhabiting in a given habitat, is known as biodiversity.

Define Ramsar Sites.

Ramsar Sites: It is a wetland site designed of international importance under the Ramsar convention. It is an inter-governmental environmental treaty established in 1971 by UNESCO and coming into force in 1975.

Definition: Biodiversity

The diversity of life forms present on Earth, including plants, animals, and microorganisms, is called biodiversity.

Define endemism.

Endemism: A species or a taxon which is confined to a specific area
E.g: Nilgiri Thar

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