Which of the following is NOT an aerial adapt | vedclass

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(A) Aerial adaptations in birds are evolutionary modifications that facilitate flight. $1$. Pneumatic bones (hollow bones) reduce body weight. $2$. Ke

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Gizzard

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(A) Aerial adaptations in birds are evolutionary modifications that facilitate flight. $1$. Pneumatic bones (hollow bones) reduce body weight. $2$. Keeled sternum provides a large surface area for the attachment of powerful flight muscles. $3$. Single ovary (reduction of reproductive organs) reduces body weight. $4$. Gizzard is a part of the digestive system used for grinding food, which is found in many birds but is not specifically an adaptation for flight; it is a general feature of the avian digestive tract to compensate for the lack of teeth.

Which of the following is $NOT$ an aerial adaptation of birds?

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