Question

unit 5 test: evolution and community ecology

• the test has 40 multiple-choice questions worth 80 points total.
• choose the one best answer for each question.
• review all your answers before submitting.

1 multiple choice 2 points
what did charles darwin infer about the different shapes and sizes of finch beaks on the galápagos islands?
the finches adapted their beaks to fit the food sources on their specific islands
the beak shapes occurred randomly in each generation
predator pressure caused the differences in beak types
the beak shapes were the result of human breeding

Explanation:

Darwin's theory of evolution by natural selection suggests that organisms adapt to their environments. In the case of Galápagos finches, their beak shapes evolved to match the available food sources on their respective islands. Random occurrence (no selective advantage link), predator pressure (not the main factor here), and human breeding (not applicable in natural Galápagos context) are less likely explanations compared to adaptation to food sources.

Answer:

The finches adapted their beaks to fit the food sources on their specific islands.