A gastrovascular cavity, with a single opening, is the characteristic digestive system of animals in which phylum?

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    Arthropoda
    Mollusca
    Platyhelminthes
    Porifera
    Nematoda

asked May 30, 2013 in Biology by anonymous
    

1 Answer

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Platyhelminthes
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)



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