Discuss the phylum Platyhelminthes

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Discuss the phylum Platyhelminthes. Refer to the presence or absence of a coelom, symmetry type, basics of the nervous system, and type of digestive tract in the free-living forms. Then, discuss the body form of a tapeworm, how an infection could happen, and subsequent treatments by physicians. Are tapeworms free-living, or parasitic? Through what process do they obtain nutrients?