Keystone species:
A)are only found in aquatic habitats.
B)are always found at the top of the food chain.
C)are vital to the soil balance of an entire ecosystem.
D)are usually not the most abundant species in the ecosystem.

Question

Quizplus · Accepted Answer

Keystone species play a critical role in maintaining the structure of an ecological community, affecting many other organisms in the ecosystem and helping to determine the types and numbers of various other species in the community. They are not necessarily the most abundant species in an ecosystem, often having a disproportionate effect on their environment relative to their abundance.

Keystone Species