Q. Which character is not same in Aves and mammals?
A) Single systemic arch
B) Metanephric kidney
C) Seven cervical vertebrae
D) Homeotherms
Explanation
Presence of seven cervical vertebrae is characteristic feature of mammals only.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.