Platyhelminthes belong to the kingdom Animalia. They are also known as flatworms. These animals are triploblastic, bilaterally symmetrical and acoelomate.
The excretory organs of Platyhelminthes are flame cells which help in excretion and osmoregulation.
It includes free-living animals (e.g., planaria) and parasitic animals (e.g., Taenia (tapeworm), Fasciola (Liver fluke) and Taenia saginata (Beef tapeworm)).