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10 Cards in this Set
- Front
- Back
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Phylum Porifera
Classes? |
Class Calcarea- calcareous sponges
Class Hexactinellida- glass sponges Class Demospongia- commercial (bath) sponges |
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Phylum Porifera
General Characteristics |
-raidal or asymmetrical symmetry
-cellular level -asexual reproduction by budding or gemmules -spicules for support -adults are sessile but the larvae have cilia -body with pores |
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Class Hexactinellida
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Glass sponges
-Silica spicule -Body shape either syconoid, leuconoid, cylindrical, or funnel shaped -ex. Venus flower basket |
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Class Calcarea
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-calcareous spicule
-ostium= water out -osculum= water in |
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Class Demospongiae
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-calcarous, silica, and/or spongin spicules
-95% of sponge species -Body shape either leuconoid or asymmetrical |
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Choanocytes
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Flagellated collared cells thhat cause flow of H2O
-line interior |
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Porocytes
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Tubular cless for water flow
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Archeocytes
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Amoeboid cells that move between choancytes and pinacocytes moving food and secreting substances
-in mesoglea (gelatinour protein matrix) |
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Pinococytes
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Flat cells in epithelium or outside
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Body Types
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Asconoid
Syconoid Leuconoid |
