Invertebrate Phylum
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11 terms
Terms | Definitions |
|---|---|
 Echinodermata | Coelomates with five-part body organization; unique water vascular systems; endoskeleton |
| Annalida | Coelomates with segmented body wall and internal organs |
| Arthropoda | Coelomates with segmented body, jointed appendages, and exoskeleton made of protein and chitin |
| Nematoda | Cylindrical, unsegmented, pseudocoelomates, no circulatory system |
| Lophophorates | Feeding structures bearing ciliated tentacles |
| Cnidaria | Unique stinging structures (cnidae), each housed in a specialized cell (cnidocyte); diploblastic; radially symetrical; gastrovascular cavity (digestive compartment with single opening) |
| Calcarea, Silicea | Lack true tissues; have choanocytes (collar cells - flagellated cells that ingest bacteria and tiny food particles) |
| Chordata | Coelomates with notochord; hollow nerve cord; pharyngeal slits; post-anal tail |
| Rotifera | Pseudocoelomates with alimentary canal (digestive tube with mout and anus); jaws |
| Mollusca | Coelomates with three main body parts (muscular foot, visceral mass, mantle); most have hard shell made of calcium carbonate |
| Platyhelminthes | Flattened, unsegmented acoelomates; gastrovascular cavity or no digestive tract |
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