Question

Which of the following is NOT an aerial adaptation seen in birds?

• A. Body is streamlined.
• B. Air bladders help them float.
• C. Forelimbs are modified into wings.
• D. Bones are hollow and filled with air cavities.

Answer 1

The correct option is B

Air bladders help them float.

Aerial adaptations are seen in birds. Forelimbs are modified into wings. The body possesses feathers which help in flight and also keeps the body warm. Bones are hollow and filled with air cavities, making the body light for flying. Body is streamlined. Lungs are provided with air sacs to make the body light.