Biology
Grade-7
Easy

Question

In ecology, a __________species is one that has a disproportionately great impact on the communities in which it lives.

  1. Foundation
  2. Specialist
  3. Keystone
  4. Invasive

hintHint:

Keystone is a species that has a disproportionately large effect on the communities in which it occurs.

The correct answer is: Keystone


    Keystone species, in ecology, a species that has a disproportionately large effect on the communities in which it occurs. Such species help to maintain local biodiversity within a community either by controlling populations of other species that would otherwise dominate the community or by providing critical resources for a wide range of species.
    The name keystone species, coined by American zoologist Robert T. Paine in 1969, was derived from the practice of using a wedge-shaped stone to support the top of an arch in a bridge or other construction.

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