Question

Which among the following features of Aves help in reducing the weight of the body?

• A. Presence of single ovary
• B. Absence of urinary bladder
• C. Pneumatic bones
• D. All of these

Answer 1

The correct option is D All of these

The bird has certain adaptations to reduce weight and aid in flight.
The presence of hollow bones (pneumatic bones), single ovary and absence of urinary bladder help in reducing weight.