OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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if species living on different islands had once been members of the same species
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if finches and tortoises had originated from the same ancestral species
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if all birds on the different islands were finches
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why all tortoises on the different islands were identical
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Detailed explanation-1: -Based on the adaptations Charles Darwin observed in finches and tortoises in the Galápagos, he wondered..-if species living on different islands had once been members of the same species.
Detailed explanation-2: -Darwin saw differences among the giant land tortoises that inhabit the islands and learned from the islands’ governor that the tortoises’ shells varied in predictable ways from one island to another. The shape of the tortoises’ shells corresponds to different habitats.
Detailed explanation-3: -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. Finches that ate small nuts and seeds had beaks for cracking nuts and seeds.
Detailed explanation-4: -For example, Darwin observed a population of giant tortoises in the Galápagos Archipelago to have longer necks than those that lived on other islands with dry lowlands. These tortoises were “selected” because they could reach more leaves and access more food than those with short necks.