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13 Cards in this Set
- Front
- Back
Metazoa |
the new Animalia |
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Characteristics of Metazoa |
Multicellular, eukaryotic, heterotropic, develop from an embryo, produce gametes, more than one type of non-reproductive cell, motile in at least 1 life stage |
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Multicellularity Advantage |
Increased size, smaller surface area to volume, cells protected, cells cooperate, cells specialize |
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Epithelial 'Tissue' |
This is squamous, thin, flat, at border; it is like saran wrap that covers other organs; however members of porifera have rudimentary this |
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Connective 'Tissue' |
In poriferans this tissue consists of cells in a non-living matrix |
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Porifera |
This word means "pore bearing," the members of this family are the first multicellular animals, they are filter feeders, they have radial or asymmetrical symmetry, they are organised on the cellular level |
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Tissues |
Poriferans have no true ___. |
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Benthic |
Poriferans are ___ creatures, meaning that they live on the bottom of an aquatic environment |
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Ostia |
The name for the pore that move water into the body of the sponge |
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Spongeocoel |
This is the central cavity of the sponge |
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Osculum |
This is the area where the water flows out of the sponge |
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Spicules |
These form the skeleton of poriferans, it is often made of CaCO3 or SiO2 |
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Spongin |
Another element of the sponge skeleton, members of Demospongiae will have this |