Question

Class – Aves : 1. Endoskeleton is fully ossified. 2. The long bones are hollow with air cavities (pneumatic). Regarding 1 and 2:

Answer 1

statement 1is wrong but statement 2 is correct.

Explanation:

endoskeleton aves are not fully ossified. they have long bones and hollow which make the body light and help them to fly if the bones will be ossified then the bone will become heavy and this will not help the bird to fly.