Helminths (parasitic worms) 。Eukaryotic Multicellular animals 。Chemoheterotrophic 。Kingdom:Animalia Phylum:Platyhelminthes (flatworms) Class:Trematodes (flukes) Class:Cestodes (tapeworms) Phylum:Nematodes (roundworms) • Helminths (parasitic worms) • Eukaryotic • Multicellular animals • Chemoheterotrophic • Kingdom: Animalia • Phylum: Platyhelminthes (flatworms) • Class: Trematodes (flukes) • Class: Cestodes (tapeworms) • Phylum: Nematodes (roundworms)