All Chordates Share Set Of Derived Characters During At Least Some Part Of Their Life

All chordates share a set of derived characters during at least some part of their life.

Answers:

notochord-a flexible rod that runs along the anterior posterior axis–may be associated with a jointed skeleton

pharyngeal clefts-grooves that separate pouches along the side of the pharynx–may develop into parts of the ear

Pharyngeal slits-openings to the outside of the body along the side of the pharynx–may develop into gill slits

Dorsal, hollow nerve cord-a bundle of nervous tissue running the length of the body–may develop into the brain and spinal cord

Muscular post anal tail-a structure that contains muscles and extends past the anus = may be used to propel some species in water