Both have internal organ systems and get their food using a pharynx.
pretty sure they're roundworms as they are round.
they are more related to roundworms
They are both worms.
spines
roundworms because they are found more in animals and etc,
gopigos islands
Bilateral symmetry.
Flatworms, Roundworms, Annelids, Mollusks, and Arthropods
They don't.
While both flatworms and roundworms are soft-skinned invertebrates, their biology differs greatly enough to put them into to distinct categories. Flatworms belong to the phylum Platyhelminthes, while roundworms belong to Nematode.Flatworms have flat, ribbon shaped bodies, while roundworms are round (but not segmented) and taper towards the end. Both are bilaterally symmetrical. Roundworms are sexed, with two different genders, while flatworms may either be sexed, hermaphroditic, or use asexual reproduction.
earthworms have clitellum and roundworms dont. earthworms are from the member of phlyum annelidia and roundworms are from the member of the phylum nematoda. Earthworm's have 5 aortic arches(hearts) which roundworms do not ! :)
They are protostomes.