EVOLUTION
DARWIN’S THEORY OF NATURAL SELECTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They need a longer beak for defending itself against predators.
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They originated from a different type of bird than the other species.
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The longer beak is an adaptation to the food available in the bird’s habitat.
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The beak stretched to reach its food and the longer beak was passed down to its offspring.
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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: -Then, natural selection would probably favor different varieties in the different islands.” In other words, beaks changed as the birds developed different tastes for fruits, seeds, or insects picked from the ground or cacti. Long, pointed beaks made some of them more fit for picking seeds out of cactus fruits.
Detailed explanation-3: -The birds on different islands had many similarities, but their beaks differed in size and shape. Four of Darwin’s finch species from the Galápagos Islands. The birds came from the same finch ancestor. They evolved as they adapted to different food resources on different islands.
Detailed explanation-4: -The most important differences between species are in the size and shape of their beaks, which are highly adapted to different food sources. The birds are all dull-coloured. They are thought to have evolved from a single finch species that came to the islands more than a million years ago.