OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Finches live in different places, but eat the same food.
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Finches live in the same place, but eat different types of food.
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Finches live in different habitats and eat different types of food.
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Finches are found all over the world.
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Detailed explanation-1: -On the Galápagos, finches evolved based on different food sources-long, pointed beaks served well for snatching insects while broad, blunt beaks work best for cracking seeds and nuts.
Detailed explanation-2: -Darwin’s finches are small birds which were studied by Darwin on Galapagos island. The original ancestral species of Darwin’s finch were seed eating types.
Detailed explanation-3: -The different beaks tell us how the different finch species evolved over time according to their environments and diets. The different shapes of the beaks correspond to what the finches eat. For example, the cactus finch has a longer, sharper beak to probe into cactus plants.
Detailed explanation-4: -The birds differ in plumage and body size but the most obvious differences between the birds are the size and shape of their beaks, which are dependent on their food preferences and specialisations. The thinnest beak belongs to the green warbler finch which uses it to probe for insects.