What are the methods of internal transport for porifera, Coelenterata(Cnidaria), Platyhelminthese and Nematod?

Question

I've been researching this for awhile and I can't figure it out. I hope you guys can help!! Thanks

Opps, sorry the last word is supposed to be "Nematodas"
They're all pylum.

Answer 1

Internal transport? I'm pretty sure you mean digestion, in which case they just have a gastrovascular cavity since they have no coelom development. (Nematodes do have a pseudocoelom, but it's still not a real coelom.)

I hope that answers your question...