Question

All of the following Avian characters are correct, except (1)Bones do not have bone marrow (2)Scales are present only in the hindlimbs region (3)Preen gland is present at the base of the tail (4)Beak possesses homodont teeth

Answer 1

Answer:

Scales are present only in hind limbs region is answer.

Avians do not have true scales they have false scales which are present Legs etc.

Hence (2) is the answer.