Some members of this phylum develop into a ciliated planula.
Some members of this phylum develop into a ciliated planula. Notable genera of this phylum include Obelia and Chironex. This phylum and Ctenophora [ti-NOF-er-uh] are the only components of the clade Radiata [rey-dee-EY-tuh]. Most members of this phylum have a gastrovascular cavity for digestion, and alternate between the medusa and polyp body forms. Most members of this phylum also have stinging structures called nematocysts. For 10 points, name this phylum whose members include sea anemones, hydras, and jellyfishes.
Some members of this phylum develop into a ciliated planula.
{Cnidaria} [{ni}-{DAIR}-{ee}-{uh}]