NEET BIOLOGY

ECOLOGY

ECOSYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A keystone species is one that
A
eats a mixture of plants and animals.
B
is introduced into a community after a major disturbance.
C
causes the amount of diversity in a community to decrease.
D
helps to stabilize the populations of other species in a community.
Explanation: 

Detailed explanation-1: -A keystone species is an organism that helps define an entire ecosystem. By keeping populations of mussels and barnacles in check, this sea star helps ensure healthy populations of seaweeds and the communities that feed on them-sea urchins, sea snails, limpets, and bivalves.

Detailed explanation-2: -helps to stabilize the populations of other species in the community. A keystone species

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