Question

Which among the following does not help flight in birds?

• A. Pneumatic bones
• B. Air sacs
• C. Wings
• D. Gizzard

Answer 1

The correct option is D Gizzard

Birds have adaptations which aid them in flight such as

• hollow air-filled bones (pneumatic bones)
• lungs associated with air sacs to increase efficiency of respiration
• wings for flight

The gizzard is a part of the digestive system in birds. It is functions like a grinding mill. It does not contribute to flight.