SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hollow Bones
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Modified front limb into a wing
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Enlarged Kidney
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Air Sacs
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Detailed explanation-1: -Of the given options short, stout peg like beak is not a flight adaptation by the birds. Birds have pneumatic bones with the fusion of pelvis with synsacrum which provides their body streamline structure and help in flight. Pygostyle present in the bird provides the support to tail feathers in birds.
Detailed explanation-2: -Flying machines Their bodies are designed for it. Their arms have transformed into wings to power them along. Instead of heavy jaws and teeth, they have lightweight beaks. And instead of fur, they have feathers.
Detailed explanation-3: -In order to attain the lift necessary for flight, birds have evolved a number of modifications to their skeletal system, including pneumatic, or hollow bones, and reduction of the number of bones by loss or fusion. Hollow, air-filled bones lighten the weight of the skeleton.
Detailed explanation-4: -Wings help birds to fly. The strongest muscles are in the wings.