SCIENCE
BIOLOGICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To look different from other species.
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To be able to eat the food readily available in the environment.
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To protect itself against predators.
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To protect itself against prey.
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Detailed explanation-1: -To look different from other species. To be able to eat the food readily available in the environment. To protect itself against predators.
Detailed explanation-2: -Birds that are a part of the same species have different characteristics to help them survive. The different shaped beaks picked up certain types of food better than others. This is the result in physical characteristics in the same species working to give the birds an advantage in their environment.
Detailed explanation-3: -Darwin observed that the finches found on the Galapagos had adapted different sized beaks to eat different diets. By doing this, the birds had evolved to eat diets that would be inedible by other finches. This concept of a “niche” means that different species will exploit and use their environment in different ways.
Detailed explanation-4: -Because the drought reduced the number of seeds and finches with bigger beaks were able to eat the larger and harder seeds so more of them survived.
Detailed explanation-5: -Q. How did different beak sizes first arise? They arose because of their need to be able to eat different food.