Question

The birds differ from reptiles in

• A. having scales on the skin
• B. having the ability to regulate body temperature
• C. being oviparous
• D. being vertebrates

Answer 1

The correct option is B having the ability to regulate body temperature

Reptiles are cold-blooded (poikilotherms) animals and cannot regulate body temperature.
Birds are warm-blooded animals and maintain constant body temperature.
Both birds and reptiles have scales on the skin. The reptiles have scales all over the body but in birds, it is confined generally to hind limbs.
Both reptiles and birds are oviparous and lay eggs.
The vertebrates include fishes, amphibians, reptiles, aves and mammals.