How does a ribbon worm differ from a flatworm?
A)A flatworm has a complete digestive system.
B)A ribbon worm has a mouth and an anus.
C)Flatworms are deuterostomes.
D)Flatworms are radially symmetrical and ribbon worms are bilaterally symmetrical.

Question

Quizplus · Accepted Answer

Ribbon worms have a complete digestive system with a mouth and an anus, whereas flatworms have a blind gut with only one opening for both ingestion and excretion.

How Does a Ribbon Worm Differ from a Flatworm