Phylum Platyhelminthes Biology for Majors II

platyhelminthes  Characteristics of Phylum Platyhelminthes · They are both parasitic and free-living in nature · They have a bilateral symmetry · They have Another characteristic of the platyhelminthes is cephalization, which means that one end of the animal functions as a head The “head” contains a mass of nerve

The parasitic Platyhelminthes contains three parasitic groups of flatworms, each having a unique morphology, and life style: The phylum Platyhelminthes includes two classes of worms that involve ants: the cestodes and the trematodes (flukes and blood

Key Points · The Platyhelminthes are acoelomate flatworms: their bodies are solid between the outer surface and the cavity of the digestive Eumetazoa > Phylum Platyhelminthes พลานาเรีย พยาธิใบไม้ พยาธิตัวตืด Flatworms have a flat body with an array of organ systems, but no body cavity