Q. What are the two major divisions of the chordate phylum?
Chordates are divided into vertebrates and protochordates (urochordates and cephalochordates).
Q. What are the differences between the other chordates and vertebrates?
Vertebrates are dissimilar because they have a spinal column vertebral column. In these animals the notochord of the embryonic stage is alternative by the vertebral column in adults.