Question

what would happens if our backbone was made up of a single bone instead of a Number of small bone

Answer 1

visa backbone was made up of single bone and it would not have some smaller number of bones than we would not have the flexibility which we have and view might not be able to move up down

Answer 2

$\huge\purple{Ello \: ♡}$

The structural composition of back bone allows us to bend, crouch, stand and lie down on the ground. The vertebral units promote this movement. If back bone is made up of one long bone then we would never be able to sit, crouch or lie. One single bone means no flexibility in the structure of a bone.