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Unformatted text preview: exoskeletons only. Observe the specimen in the marine tank. Can you see the tentacles and mouth? Make a sketch of discharged nematocysts available on demonstration under oil immersion. Phylum Ctenophora (comb jellies) These exclusively marine animals are planktonic, swimming by means of 8 rows of fused ciliated comb plates , and feeding with retractable tentacles containing adhesive mucous-secreting cells. If you cant find the tentacles in the preserved specimens, they have probably been retracted. Ctenophores are radial and diploblastic. Name two characteristics that members of the Phylum Cnidaria and the Phylum Ctenophora have in common. Name two diagnostic characteristics that can be used to distinguish between members of these phyla....
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- Fall '11