Invertebrates 8 Phyla of Invertebrates

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Invertebrates8 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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• 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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• 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)