OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Variation
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Adaptation
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Overproduction
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Descent with modification
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Detailed explanation-1: -Darwin noticed that some birds, which he called finches, had different beak shapes compared to mainland finches. The Galapagos Finches’ beak shapes had evolved to complement the food they ate on the island.
Detailed explanation-2: -All species of Darwin’s finches are closely related, having derived recently (in geological terms) from a common ancestor.
Detailed explanation-3: -Darwin speculated that these sparrow-like birds came to the Galapagos by the wind. Thereafter, evolution took place, leading to different groups based on their different diets. At present, these finches are considered as emblems of evolution.
Detailed explanation-4: -This is considered as an example of adaptive radiation. The process of evolution which results in the transformation of original species to many different varieties is called adaptive radiation. This is an indication that all the finches on the Galapagos Islands descended from a common ancestor.