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22 Cards in this Set
- Front
- Back
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Cells? |
Multicellular |
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Tissue? |
No true tissue |
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Symmetry |
Usually asymmetrical, may b radial |
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Sponges moving? |
Sessile, they don't move |
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Eating |
Filter feeders, ear protazoa and plankton |
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Drinking? |
Filter 20 liter of h2o |
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Reproduction |
Monoecious |
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Self fertilize? |
Maybe, usually egg & sperm @ diff times |
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Internal or ex fert? |
External... Release egg + sperm into h2o |
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Asexual? |
Sometimes... Fragmentation or gemmation |
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Nervous system? |
No nerve cells/brain |
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3 classes |
Calcerea, hexactinellida, demospongiae
CHD |
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Calcerea |
Spicules of calcium carbonate |
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Hexactinellida |
Spicules made of silica |
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Demospongiae |
Calcium carbonate, silica, or both
Biggest |
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3 body forms |
Ascon- simplest Sycon- folder, outer structure Leucon- most complex, no spongeocoel |
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Spongeocoel |
Inner chamber of sponge |
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Spicules .. Made of.. |
Skeleton of a sponge ... Calcium carbonate or silica |
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Porocyte |
H2o enters |
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Choanocytes- |
flagellated cells trap food + particles |
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Amoebocytes |
Break down food + provide nutrients for rest of cell |
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Osculum |
Hole where h2o leaves |
