Characteristics
1. The Platyhelminthes have bilateral symmetry, triploblastic tissue layers, dorsoventrally flattened bodies, and are acoelmates.
2. These organisms are unsegmented worms. However, in class Cestoidea are stobilated worms.
3. These organisms also have an incomplete gut. However, in class Cestoidea the gut is absent.
4. Platyhelminthes are partially cephalized, with an anterior cerebral ganglion and longitudinal nerve cords.
5. These organisms have protonephridia as excretory or osmoregulatory structures.
6. Most organisms in this phyla are monoecious with complex reproductive structures.
7. Platyhelminthes have a nervous system with a pair of anterior ganglia along with longitudinal nerve cords, the cords are connected by transverse nerves and located in the mesenchyme.
2. These organisms are unsegmented worms. However, in class Cestoidea are stobilated worms.
3. These organisms also have an incomplete gut. However, in class Cestoidea the gut is absent.
4. Platyhelminthes are partially cephalized, with an anterior cerebral ganglion and longitudinal nerve cords.
5. These organisms have protonephridia as excretory or osmoregulatory structures.
6. Most organisms in this phyla are monoecious with complex reproductive structures.
7. Platyhelminthes have a nervous system with a pair of anterior ganglia along with longitudinal nerve cords, the cords are connected by transverse nerves and located in the mesenchyme.