What characteristics do chordates have? 
arthropods aerobic capacity annelids protozoa Veins and arteries. backbone and jaw sensory neurons four limbs
A B C D E F G H
Jaws appear within the vertebrates.
chordates have a backbone and jaws.
What characteristics do chordates have?  (A) arthropods (B) aerobic capacity (C) annelids (D) protozoa (E) Veins and arteries. (F) backbone and jaw (G) sensory neurons (H) four limbs