chordates

Question 1

All chordates have 4 things at some point in development:

Answer 1

nerve cord
a notochord
pharyngeal gill slits
tail

Question 2

Tetrapods

Answer 2

four feet- primarily terrestrial

Question 3

vertebrates have the 4 chordate requirements +

Answer 3

backbone

Question 4

Systematics

Answer 4

using phylum features to create a “tree”