Q. The long bones are hollow and connected by air passage. These are characteristic of
A) Mammalia
B) Aves
C) Reptilia
D) Sponges
Explanation
In Aves, long bones are hollow and connected by air passage.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.