Q. How many pairs of ribs are present in human skeleton?
A) 10 pair
B) 12 pair
C) 9 pair
D) 7 pair
Explanation
12 pairs. Most mammal have 7 cervical vertebrae. There are four exceptions as follows 2-toed sloth = 6 Cervical vertebrae Manatee = 6 Cervical vertebrae Anthear = 8 Cervical vertebrae 3-toed sloth = 9 Cervical vertebrae
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.