1.

Which animal phylum has the lowest structural organisation?

Answer»

Phylum Porifera (Sponges) ...Phylum Coelenterata (Cnidaria) Corals & JELLYFISH. ...Phylum Ctenophora (Comb JELLIES) ...Phylum Platyhelminthes (FLATWORMS) ...Phylum Nemertea (Ribbon Worms) ...Phylum Rotifera (Rotifers) ...Phylum Gastrotricha (Gastrotrichs) ...Phylum Nematomorpha (Horsehair Worms)



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