BASIS Cestodes Trematodes NematodesShape tapelike;

segmentedleaf-like;unsegmented elongated,

cylindrical;unsegmentedSexes not separate

(monoecious)not separateexcept Schisto

separate; diecious

Head End suckers often w/ hooks

suckers, no hooks no suckers, no hooks, well developed buccal cavity

Alimentary Canal

absent incomplete, no anus present, completeanus present

Body Cavity absent absent present