Term
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Definition
| Lowest level of a water system, including substrate |
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Term
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Definition
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Term
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Definition
| Flagellated cell used to create water circulation in sponges |
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Term
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Definition
| Inner layer of cells lining the spongocoel |
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Term
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Definition
| Flattened cells forming the outer layer of a sponge |
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Term
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Definition
| Outer cell layer of a sponge |
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Term
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Definition
| Gelatinous, non-living layer of cells between the Choanoderm and Pinacoderm |
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Term
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Definition
| Found in the Mesohyl, an inorganic, hard spike that provides rigidity and defense to the sponge |
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Term
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Definition
| Found in the Mesohyl, organic fibers composed of collagenous protein |
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Definition
| Found in the Mesohyl, a motile amoeboid cell that aids in digestion, can also specialize and become another kind of cell |
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Definition
| Small openings where water enters into the sponge |
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Term
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Definition
| Larger opening where water leaves the sponge |
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Term
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Definition
| Class of sponges with spicules composed only of calcium carbonate |
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Term
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Definition
| Grade of structure - simplest form, radially symmetrical tube like body |
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Term
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Definition
| Grade of structure - more complex morphology, flagellated chambers, resemble large asconoid sponges |
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Term
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Definition
| Grade of structure - majority of sponges, most are colonial, and resemble more elaborate syconoid type. |
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Term
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Definition
| Class of sponges with no spicules or with non-hexactine, siliceous spicules |
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Term
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Definition
Class of sponges with six-rayed siliceous spicules
Also known as glass sponges |
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Term
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Definition
Genus in the class Calcarea
Demonstrates Ascon grade of structure with simple tube like structure |
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Term
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Definition
Genus in the class Calcarea
Demonstrates Sycon grade of structure with several smaller Ostia channels surrounding the central Spongocoel |
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Term
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Definition
Genus in the class Calcarea
Demonstrates a transitional phase between Sycon and Leucon grades. Has increased complexity in the chanocyte chambers and a reduction in the spongocoel. |
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Term
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Definition
Class of sponges with no sponges or with non-hectactine, siliceous spicules
Contains 90% of all sponges |
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Term
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Definition
Genus within the class Demospongiae
Yellow sponge that burrows into mollusc and barnacle shells by releasing chemicals that degrade the calcium carbonate |
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Term
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Definition
Resistant stages formed by an aggregation of amoebocytes.
Form of asexual reproduction. |
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Term
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Definition
| Non-feeding, dispersal larva found in Scypha sponges. |
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