| A | B |
|---|
| A marine animal characterized by spiny skin, an endoskeleton, radial symmetry, and a water vascular system | Echinoderm |
| A network of fluid-filled tubes | Water Vascular System |
| A muscular sac that helps force water intp a tube foot | Ampulla |
| A hollow tube which may havr a sunctioncup-like end | Tube foot |
| An animal in which a blastophere develops into a mouth | Protostome |
| An animal in which a blastopore develops into an anus | Deutrostome |
| In chorordates, a nreve chord that is located along the back of the animal | Dorsal Hollow Nerve |
| Firm but flexible supporting rod located just below the nerve cord | Notochord |
| Paired openings along the pharynx | Gill Slits |
| All chordates, including humans, have a tail that extends beyond the anus called? | Post-anal tail |
