Q. The unique mammalian characteristics are:
A) pinna, monocondylic skull and mammary glands
B) hairs, tympanic membrane and mammary glands
C) hairs, pinna and mammary glands
D) hairs, pinna and indirect development
Explanation
[Solution from source] Mammary glands, hair on the skin and external ears (pinnae) are unique mammalian characteristics. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.