ASAP please help me! What is a dorsal notochord? A. part of the nervous system in both vertebrates and invertebrates. B. part of most chordate embryos that develops into a spinal column (vertebrae). C. part of chordates that protects the circulatory system. D. part of mammals only that develops into the spinal column.

B

Explanation:

part of most chordate embryos that develops into a spinal column (vertebrae).

It is also the development of the backbone of an embryo,that later becomes a spine

structure is maintained and sustained by:

-cytoskeleton: gives cells coherence

-cell wall: support

-cytoplasm: shape

hope this .

answer: blah

explanation:

bc blah