Question

What are the features of 'chordates' that make them different from 'non-vertebrates'?

Answer 1

Chordates	Non -vertebrates
They have a notochord.	Notochord absent.
They have well developed and highly complex respiratory, digestive, circulatory and nervous system.	Well developed respiratory, digestive, circulatory and nervous system absent.
They have a bilaterally symmetrical body.	The body may be bilaterally or radially symmetrical.
They do not have compound eyes.	They have compound eyes.