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Unformatted text preview: opening. Choanocytes-bring food in and out Complete digestive gut Middle jelly layer Polyp-sessile (coral) Medusa- motile (jellyfish) Communal Stinging cells 1 st brain nervous system hermaphodytes parasitic free living incomplete gut Segmented bodies Hydrostatic skeletons Closed circulatory system Coordinated movement Gas exchange-diffusion Head-foot,mantle-visceral mass Large brains Chitons, gastropods, bivalves, cephalopods Cuticle Parasictic Roundworm Not segmented Thick exoskeleton. Molting (sheding) Spericules- comes in though like tubes Subphylum none Embryonic development None Reproduction Asexual/ sexual Sexual/ asexual Sexual/ asexual Sexual/ asexual sexual sexual...
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This note was uploaded on 04/14/2010 for the course BIO 1101 taught by Professor Brewer during the Spring '10 term at Georgia State University, Atlanta.
- Spring '10