Sponges

Sponges - KingdomAnimalia Sponges Cnidarians Flatworms...

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Kingdom Animalia Sponges  Cnidarians Flatworms Roundworms
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Sponges Assymetrical Freshwater or saltwater Sessile – do not move Filter feeders No Nervous System Multicellular organization (no true tissues yet)
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O the r S po ng e  Fa c ts : Sponges can  regenerate  – replace lost body parts  through mitotic cell division. Economic Importance:   Commercial sponge harvesting for personal care  industry.
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Sponge Reproduction: Asexually – fragmentation or  budding Sexually – sponges are  hermaphrodites External fertilization Internal fertilization  - eggs remain inside  parent sponge’s body. 
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Cnidarians – Stinging Animals Radial Symmetry Mostly saltwater Corals Jellyfish Sea anemones Hydra
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Cnidarian Movement POLYP is sessile – does not move MEDUSA is  motile – squeezes bell (umbrella) to  move  uses simple ring of contractile tissue (not muscle  tissue yet)
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Sponges - KingdomAnimalia Sponges Cnidarians Flatworms...

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