What are the peculiar features that you find in parasitic platyhelminthes?

Parasitic platyhelminthes such as tapeworms and flukes exhibit a dorsoventrally flattened body, absence of a coelom, incomplete or absent digestive system, hooks and suckers for host attachment, highly developed hermaphroditic reproductive systems to ensure high reproduction rates, reduced sensory and locomotory organs, and complex life cycles involving one or more intermediate hosts to complete their development and transmission.