Question:

Do flatworms have a circulatory system? If so, is it open or closed?

Answer:

Most flatworms have a single opening to the digestive tract and they have no respiratory or circulatory systems. AnswerParty Rocks!

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Circulatory system Exercise physiology Respiratory system Model organisms Health Medical Pharma flatworms Platyhelminthes Zoology Biology Flatworm Planarian Acoelomorpha circulatory systems
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