Platyhelminthes organisms; New Zealand flatworms, Lancet liver flukes, blood flukes, tapeworms, blue pseudoceros flatworm
Platyhelminthes body symmetry is bilateral Platyhelminthes reproduction system. Platyhelminthes are hermaphrodites, which are organisms that have both male and female sex organs: reproduce asexually and sexually.
Acoelomate means no body cavity.
Platyhelminthes have cephalization. Cephalization means the development of an organism's localization of important organs or parts in or near the head. To put it simply, “organs that have major importance gradually are growing toward one region”. In this case the head. The gastrovascular cavity in these organisms is special because it replaces the entire digestive system by simply using the same cavity that brings in food, to dispel waste as well.