Class 12 NEET Biology Organisms and Populations

Question : 76 of 103

Marks: +1, -0

What is a keystone species?

(2004)

A species which makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community's organization and survival
A common species that has plenty of biomass, yet has a fairly low impact on the community's organization
A rare species that has minimal impact on the biomass and on other species in the community
A dominant species that constitutes a large proportion of the biomass and which affects many other species.

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