LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In finches (birds), what is the biggest advantage of having different shaped beaks?
A
to look different from other species
B
to protect itself from predators
C
to be able to eat the food readily available in the environment
D
to protect itself against prey
Explanation: 

Detailed explanation-1: -Darwin deduced that these differences made the finches better adapted to take advantage of the food in their particular local environment-thin, sharp beaks prevailing where the birds’ main food was insects and grubs, and large claw-shaped beaks where their diet was buds, fruit and nuts.

Detailed explanation-2: -You have likely noticed that no beak is the same amongst different bird species. This is because each bird has a beak evolved to suit its hunting and feeding habits. Different birds use their specially adapted bills to expertly catch their prey, pry seeds from their shells, or sip nectar from a flower.

Detailed explanation-3: -Different finch populations evolved to eat different food sources. Some finches on some islands evolved thin, sharp beaks that helped them to eat insects and the blood other larger animals; on other islands, finches evolved large, sturdy beaks ideally adapted to eating seeds, berries and nuts.

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