What Replaces the Notochord in Most Vertebrates

Question

What replaces the notochord in most vertebrates?
A)nothing
B)the dorsal nerve cord
C)a solid rod of calcium
D)thickened skin
E)vertebrae

Accepted Answer

In most vertebrates, the notochord is replaced by a series of vertebrae that form the spinal column. This provides increased support and protection for the dorsal nerve cord.