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Myra Hodkiewicz ∙
An earthworm does not have any heart at all. But they do have an organ that acts similar to a heart and is usually called aortic arc.
tapeworm
nervis system
malpighian tubules
all of the worm phylums do
bristleworm
Annelida, Aschelminthes, Platyhelminthes.
annelida
It is the Aschelminthes Phylum
protective cuticle
cestoda
Annelida
nervous system
i believe it is the Planaria Worm.
roundworms phylum is nematoda