UPSC 2000 › Environment & Ecology › Ecosystems & Ecology Concepts

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UPSC 2000 · Q126 · Environment & Ecology › Ecosystems & Ecology Concepts · Save

Within biological communities, some species are important in determining the ability of a large number of other species to persist in the community. Such species are called

(a) Keystone species
(b) Allopatric species
(c) Sympatric species
(d) Threatened species
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Answer: (a) Keystone species