Ribbon worms and flatworms both have
A) a flow-through digestive tract.
B) flame cells.
C) a blood-vascular system.
D) an eversible proboscis.
E) mostly parasitic lifestyles.

Name: Ribbon worms and flatworms both have A) a flow-through digestive tract. B) flame cells. C) a blood-vascular system. D) an eversible proboscis. E) mostly parasitic lifestyles.
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Question

Quizplus · Accepted Answer

Both ribbon worms and flatworms have flame cells, which are involved in excretion and osmoregulation.

Ribbon Worms and Flatworms Both Have