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The two phyla that have characteristic u-shaped alimentary canals and a crown of ciliated tentacles are the ________ and the ________.

User Ckedar
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I think the correct answers are Ectoprocta and Brachiopoda. These are the two phylas that contains a characteristic alimentary canals which are in  U-shape. Also, they have crowns with ciliated tentacles. Hope this answers the question.
User Bob Claerhout
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