Traditionally divided into the non-parasitic turbellarians and three parasitic clades, they are unsegmented and include tapeworms and flukes.
One organism in this phylum causes Katayama's fever, is detected using the Kato-Katz technique, and is treated with praziquantel. That organism is carried in snails. Another organism in this phylum causes neurocystericosis, and it contains the causative agent of schistosomiasis. This phylum, along with rotifers and nemertians, use flame cells for excretion, and they're among the simplest organisms to demonstrate (*) cephalization. They are bilaterally symmetric, acoelemate protostomes, and among their subdivisions include the cestoda and monogenea. Traditionally divided into the non-parasitic turbellarians and three parasitic clades, they are unsegmented and include tapeworms and flukes. For 10 points, name this phylum of flatworms.
One organism in this phylum causes Katayama's fever, is detected using the Kato-Katz technique, and is treated with praziquantel.
Platyhelminths or Flatworms before mention