Term
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Definition
Kingdom Animalia
>Phylim Porifera
>Class Calcarea
>Genus Grantia |
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Term
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Definition
| An integument or outer layer of various invertebrates. |
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Term
mesenchyme
mes·en·chyme (mez-in-kym) |
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Definition
| consisting of loosely packed, unspecialized cells set in a gelatinous ground substance, from which connective tissue is formed. |
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Term
1. choanocyte layer
2. cho·an·o·cytes
ko-an-ah-sight) |
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Definition
1. One of a layer of flagellated cells lining the body cavity of a sponge and characterized by a collar of cytoplasm surrounding the flagellum.
2. Also called collar cell. |
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Term
ostium
os·ti·um (ah-ste-um)
pl. os·ti·a |
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Definition
| Any of the small openings or pores in a sponge. |
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Term
| incurrent canal [in′kər·ənt kə′nal] |
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Definition
| A canal through which water enters a sponge. |
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Term
| radial canal [′rād·ē·əl kə′nal] |
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Definition
One of the numerous canals that radiate from the spongocoel in certain Porifera.
Any of the canals extending from the coelenteron to the circular canal in the margin of the umbrella in jellyfishes.
A canal radiating from the circumoral canal along each ambulacral area in many echinoderms. |
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Term
flagellated chamber [¦flaj·ə‚lād·əd ′chām·bər]
or radial canal |
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Definition
| An outpouching of the wall of the central cavity in Porifera that is lined with choanocytes; connects with incurrent canals through prosophyles. |
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Term
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Definition
| Any one of the large pores in a sponge by which water leaves a flagellated chamber to enter the sgongocoel (exhalant system). |
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Term
| basal disc [′bā·səl ′disk] |
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Definition
| The flattened adhesiive portion of the stalk of certain polyp or sessile organisms, used for attachment to the substrate. |
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Term
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Definition
| One of the wandering ameboid cells in the tissues and fluids of many invertebrates that function in assimilation and excretion. |
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Term
prosopyle
pros o pyle [′präs·ə‚pīl] |
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Definition
| The opening into a flagellated chamber from an inhalant canal in sponges. |
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Term
budding
K.Animalia>P.Porifera>C.Calcarea>G.Grantia |
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Definition
| Asexual reproduction from an outgrowth or bud, producinggenetically identical gemmules. |
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Term
| spongocoel (spong guh-sel) |
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Definition
| The central cavity of a sponge, which opens to the outside by way of the osculum |
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Term
osculum
os·cu·lum (ahs-q-loom)
pl. os·cu·la (-ky-l) also os·cules |
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Definition
| The mouthlike opening in a sponge, used to expel water. |
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Term
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Definition
| outer most layer of cells on the external surface of the sponge body and characterized as an epithelial layer of flattened cells |
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Term
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Definition
| The presence of both male and female reproductive organs and secondary sexual characteristics in the same individualas as in an earthworm or a monoecious plant. |
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