LIFE SCIENCE

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OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Charles Darwin’s observation that finches of different species on the Galápagos Islands have many similar physical characteristics supports the hypothesis that these finches
A
have the ability to interbreed. have the ability to interbreed.
B
acquired traits through use and disuse.
C
all eat the same type of food.
D
descended from a common ancestor.
Explanation: 

Detailed explanation-1: -On the Galapagos Islands, Darwin also saw several different types of finch, a different species on each island. He noticed that each finch species had a different type of beak, depending on the food available on its island. The finches that ate large nuts had strong beaks for breaking the nuts open.

Detailed explanation-2: -However, the Galapagos finches helped Darwin solidify his idea of natural selection. The favorable adaptations of Darwin’s Finches’ beaks were selected for over generations until they all branched out to make new species. These birds, although nearly identical in all other ways to mainland finches, had different beaks.

Detailed explanation-3: -How did Darwin explain why the finches on the Galapagos Islands look so similar to each other except for their beaks? The finches all have a recent common ancestor but they evolved on different islands where different types of food are available.

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