In vertebrate evolution, the appearance of the vertebral column led most directly to the development of a. limbs such as arms and legs b. jaws c. sense organs and the nervous system d. more efficient breathing systems e. greater speed and agility

In vertebrate evolution, the appearance of the vertebral column led most directly to the development of

a.    limbs such as arms and legs

b.    jaws

c.    sense organs and the nervous system

d.    more efficient breathing systems

e.    greater speed and agility

Ans: greater speed and agility