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Keystone Speices Help?

I need some help with this question. I think that the answer is C, but it could be E.

3. Keystone species:

(A) impact the physical structure of a community because they have high biomass.

Both C and E are correct

(C) profoundly impact community composition despite a relatively low biomass or abundance.

(D) prevent the movement of energy from one trophic level to the next.

(B) act primarily as herbivores in a community.

(E) are usually primary producers (plants or other photosynthetic organisms).

1 Answer

  • 7 years ago
    Favorite Answer

    I'm pretty sure it's C. Since the definition of a keystone species is "organism that has an unusually large effect on its ecosystem"

    Source(s): My textbook and brain
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