Invertebrates 8 Phyla of Invertebrates

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Presentation transcript:

Invertebrates 8 Phyla of Invertebrates Part 8

Porifera (sponges) asymmetrical Body has canal and pores sessile (attached to object, cannot move)

Cnidaria (stinging cell) Stinging cells and hollow bodies tentacles that surround a mouth

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

*Nematoda (roundworm) 3 kinds of cells Round bodies with pointed ends Males & females are separate

*Annelida (segmented worm) 3 kinds of cells Body divided into segments (with setae) Most are hermaphrodites & free living

Mollusca (soft-bodied) Soft body usually protected by a shell Body covered by mantle Have muscular foot Most have separate sexes

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

Echinoderms (spiny skin) 5 part body spines Tube Feet (with Suctions)