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Invertebrates 8 Phyla of Invertebrates
Part 8
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Porifera (sponges) asymmetrical Body has canal and pores sessile (attached to object, cannot move)
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Cnidaria (stinging cell)
Stinging cells and hollow bodies tentacles that surround a mouth
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Many are parasites, some are Free-Living Can regenerate
*Platyhelminthes (flatworm) 3 kinds of cells _flattened body One body opening Many are parasites, some are Free-Living Can regenerate
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*Nematoda (roundworm)
3 kinds of cells Round bodies with pointed ends Males & females are separate
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*Annelida (segmented worm)
3 kinds of cells Body divided into segments (with setae) Most are hermaphrodites & free living
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Mollusca (soft-bodied)
Soft body usually protected by a shell Body covered by mantle Have muscular foot Most have separate sexes
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Exoskeleton that sheds by molting Head, thorax, abdomen are main parts
*Arthropoda (jointed leg) Jointed appendages Segmented bodies Exoskeleton that sheds by molting Head, thorax, abdomen are main parts Some separate sexes, hermaphrodites, parthenogenesis Some emit pheromones
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Echinoderms (spiny skin)
5 part body spines Tube Feet (with Suctions)
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