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After Extinction

APBIO-WXYN9E

An isolated forest area is dominated by seed-eating birds, fruit-eating mammals, and insectivore amphibians.

The island experiences a long period of drought, causing the extinction of all large animals except for the seed-eating birds. The plant population of the forest recovers with the return of the water sources.

Which of the following is the MOST likely outcome?

A

Bird populations that specialize in eating fruit and insects will evolve.

B

The bird populations will soon go extinct as well, as they are dependent on the ecological roles of the mammals and amphibians.

C

The mammals and amphibians will reappear.

D

The plant species will go extinct without the mammals and amphibians.