A true coelom is an internal body cavity. Which of these phyla contain organisms that have a true coelom?

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    Porifera
    Annelida
    Cnidaria
    Platyhelminthes
asked May 19, 2013 in Biology by anonymous
    

1 Answer

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Annelida
answered May 20, 2013 by Bioshare ~Top Expert~ (34,070 points)

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