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Definition
| Sponges with calcareous spicules; all 3 body plans present in class |
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Definition
| Largest class of sponges; spicules made of spongin, silica, or both; usually leuconoid |
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| Four and/or six-pointed silicious spicules; glass sponges; predominantly found in deep water |
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Definition
| The large hole(s) in a sponge through which water is expelled |
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| The tiny pores through which water enters a sponge |
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| Simplest of all sponge body plans; tube or vase shaped; body wall simple; radially symmetrical |
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Definition
| More advanced than asconoid, less than leuconoid; walls invaginated to increase efficiency of water movement by increasing surface area & choanocytes & decreasing spongocoel volume; can grow larger than asconoid |
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Definition
| Spongocoel absent; Walls highly invaginated; lots of choanocytes; highly efficient water flow; can grow to largest size and have irregular shapes w/o symmetry |
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Definition
| Outer cells covering sponge; equivalent to epiderm |
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Definition
| Cells lining pores of a sponge through which water is drawn |
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Definition
| Collar cells with flagella which generate water currents and collect food; may also produce sperm |
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Definition
| Store, digest, and transport food; excrete waste; secrete skeleton; may also give rise to buds in asexual repro |
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Definition
| Undifferentiated sponge cells; totipotent |
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| Only in FW sponges; groups of amoebocytes w/ food and a hard covering of spicules around them; basically sponge spores |
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Definition
| Sexual or asexual; most FW are dioecious; most hermaphroditic sp. produce eggs/sperm at different times to prevent self-fertilization; sperm released via osculum & taken up via ostia; asexual by budding/fragmentation |
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Definition
| Main waste is ammonia; removed by water currents in sponge |
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Definition
| Marine or FW; usually prefer hard substrates, though some can live on soft substrates like muddy lake bottoms |
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Definition
| All filter feeders; some have zooxanthellae |
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| Water flow through sponge |
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Definition
| Sponge food storage, spicule formation |
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Definition
| Contractile cells in sponge, canals |
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