Gastrovaskuler
Radial
Tentakel
Nematokis
Hydra
Obelia
Koral
Anemon
Fasciola hepatica
Planaria
Taenia saginata
Chlonorchis japonicum
Pori
Koanosit
Oskulum
Ostia
Cephalopoda
Gastropoda
Scapopoda
Felicipoda
Asteroidea
Ophiuroidea
Crunoidea
Echinoidea
Semu
Bersegmen
Banyak
Ada di perut
Eunice viridis
Lumbricus terestris
Hirudinaria javanica
Pheretima sp.
Ascaris lumbricoides
Ancilostoma duodenale
Enterobius
Taenia saginata
Pernapasan
Pencernaan makanan
Saraf
Reproduksi
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