OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The birds had different beaks because females preferred certain shaped beaks over others
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People had to breed the bird to have beaks with varied shapes and sizes
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Some birds had been injured by predators and were poor competitors
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The birds had beaks that were adapted for feeding on different types of foods
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Detailed explanation-1: -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-2: -The mechanism that Darwin proposed for evolution is natural selection. Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.
Detailed explanation-3: -Some were small. Each one was suited to the availability of particular foodstuffs. Eventually Darwin theorized that different species of finch had evolved on different islands, their distinctive beaks being an adaptation to distinct natural habitats or environmental niches.
Detailed explanation-4: -Out of the 14 finches observed by Darwin, 13 were from the Galapagos island, and one was from the Cocos island. These finches evolved from a common ancestor to have different beaks well-suited for different types of food they feed on.