Biology
Grade-7
Easy
Question
In ecology, a __________species is one that has a disproportionately great impact on the communities in which it lives.
- Foundation
- Specialist
- Keystone
- Invasive
Hint:
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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