Question

How are chordates further divided into three subphyla?

A. By their habitats
B. By the presence or absence of a notochord
C. By how they obtain food
D. By their body structures

Answer 1

The answer is by the presence or absence of a notochord

Answer 2

Answer: D. By their body structures

Step-by-step explanation:

They are divided into three subphyla which would be Vertebrate.