SAT Subject Biology Practice Question 66: Answer and Explanation

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Question: 66

5. All of these are likely consequences of removing a keystone species from an ecosystem, EXCEPT a/an

A. decrease in species diversity
B. increase in other community populations
C. increase in the types of ecological interactions
D. decrease in the carrying capacity for most of the community
E. increase in the rate of growth of one or more populations

Correct Answer: C

Explanation:

Keystone species maintain the structure of a community. Removing a keystone species is not likely to increase the number of ecological interactions, because the species diversity of the community also decreases.

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