Over millions of years of time, an island's vegetation shifts. The seed-producing plants that dominated the early origins of the island die out in favor of new species of plants that do not produce seeds but provide a good habitat for insects. How is this change likely to affect a species of birds that uses seed as its primary source of food and insects as a secondary food source?

Question

a. The species will maintain its heritable traits while learning to make insects their primary food source.
b. The species will decline and become endangered because its adaptations have reduced utility.
c. The species will split into two: one adapted to eating seeds and a second adapted to eating insects.
d. Over time, a shift in traits will be observed as the species adapts to an insect diet.

D

Answer 1

I agree.