The species which are no more found anywhere on earth are called

  • rare species

  • endangered species

  • extinct species

  • threatened species


C.

extinct species

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The number of species India contains which is considered globally threatened is 

  • 39

  • 172

  • 400

  • 300


B.

172

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The species which are at the verge of the extinction are called

  • Endemic

  • Extinct

  • Endangered

  • None of the above


C.

Endangered

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Cutting of a forest at large scale is called

  • Deforestation

  • Reforestation

  • Afforestation

  • All of the above


A.

Deforestation

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Define the following :

(i) Biodiversity

(ii) Species

(iii) Endemic Species

(iv) Extinct Species

(v) Endangered Species


(i) Biodiversity : Biodiversity refers to the variety of organisms existing on earth, their inter relationship and their relationship with the environment.

(ii) Species : A group of population which are capable of inter breeding is called species.

(iii) Endemic Species : Species of plants and animals confined to specific geographical areas are called endemic species.

(iv) Extinct Species : Species that no longer exist anywhere on Earth are called extinct species.

(v) Endangered Species : Species that are in danger of getting extinct are called endangered species.

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