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11 Cards in this Set
- Front
- Back
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spicules
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one of the minute calcareous or siliceou skeletal bodies found in sponges, radiolarians, softcorals, and sea cucumbers
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spongin
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fibrous, collagenous material making up the skelital network of sponges
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ostia
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tiny openings for incoming water
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osculum
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excurren opening in a sponge
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choanocytes
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oneof the flagekate collar cells that line cavities and canals of sponges
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dermal ostia
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multitude of tiny incurrent pores
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spongecoel
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central cavity in sponges
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radial canals
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canals along the ambulacara radiating from the ring canal of echodimes;also choancyte-lined canals in sycoinoid sponges
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incurrent canals
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canal that water enters the sponge through
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prosoplyles
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connections between the incurrent and radial canals in some sponges
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mesoyl
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gelatinous matrix
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