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| -Hexactinellid sponges are sponges with a skeleton made of four- and/or six-pointed silaceous spicules, often referred to as glass sponges |
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| The largest class in the phylum Porifera. |
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| members of the animal phylum Porifera, the cellular sponges. |
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| Simplest form of sponges, with canals leading directly from the outside to the interion. |
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| sponges are similar to asconoids. They have a tubular body with a single osculum, but the body wall is thicker and more complex than that of asconoids and contains choanocyte-lined radial canals that empty into the spongocoel |
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Definition
| A type of canal system in sponges where choanocytes reside in chambers. |
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| One of the flagellated collar cells that line cavities and canals of sponges. |
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| Flattened cells composing dermal epithelium in sponges. |
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| Fibrous, collagenous material forming the skeletal network of horny sponges. |
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| Each of the small needlelike or sharp-pointed structures of calcite or silica that make up the skeleton of a sponge-Each of the small needlelike or sharp-pointed structures of calcite or silica that make up the skeleton of a sponge |
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| a series of tiny pores all over the body of a sponge that let water into the sponge. |
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| A large aperture in a sponge through which water is expelled. |
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| An aquatic animal, such as a clam or sponge, that feeds by filtering tiny organisms or fine particles of organic material from currents of water that pass through it. |
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Definition
| The layer of pinacocytes in sponges. |
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Definition
| The engulfment of a particle by a phagocyte or a protozoan. |
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Definition
| Ameboid cells of varied function in sponges. |
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Definition
| Central cavity in sponges. |
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| Canals along the ambulaera radiating from the ring canal of echinoderms; also choanocyte-lined canals in syconoid sponges. |
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| Gelatin matrix surrounding sponge cells; mesoglea, mesenchyme. |
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Definition
| An amebocyte in sponges that secretes spicules. |
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| A cell in sponges that secretes sponging |
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Definition
| A type of cell in sponges that is star shaped and apparently contractile. |
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| Having both male and female gonads in the same organism; hermaphroditic. |
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| Asexual, cystlike reproductive unit in freshwater sponges; formed in summer or autumn and capable of over-wintering. |
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Definition
| Porifera- A grand division of the Invertebrata, including the sponges |
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