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10 Cards in this Set
- Front
- Back
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Phylum Molluska Class Polyplacaphora |
- Chitons - marine - scrape algae using radula - shell of 8 overlapping plates, dorsoventrally flattened |
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Phylum Molluska Class Bivalvia |
- Clams, Oysters, Mussles - marine, freshwater - filter feed w siphons, gills used to fileter feed - two shells, laterally flattened |
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Phylum Molluska Class Gastropoda |
- Snails and Slugs - marine, freshwater, terrestrial - scrape algae or drill holes using radula - twisted body mass and shell in snails - Shell reduced and buried in outer tissues (slug) - land snails use mantle cavity as rudimentary lung |
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Phylum Molluska Class Cephalopoda |
- Squid, Octopus, Cuttlefish - marine - predatory; toxic saliva, beak and radula for tearing prey - shell present, absent, or reduced |
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Phylum Annelida Class Polychaeta |
- Marine worms, paddleworms and sea mice - parapodia - separate sexes and rely on external fertilization in the water |
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Phylum Annelida Class Oligochaeta |
- earthworm - hermaphroditic and fertilize one another using a clitellum -swollen series of segments where secreted mucus helps hold pairs of worms together during mating |
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Phylum Annelida Class Hirudinea |
- Leech - hermaphroditic and produce eggs encased in a nutrient rich cocoon - suckers used for movement and feeding |
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Phylum Nematoda |
- roundworms - lack segmentation - pseudocoelomates - Ecdysozoans, nematodes and arthopods - must molt in order to grow, undergoes radial cleavage - live in all aquatic habitats - lack circular muscles
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Phylum Molluska |
- Eukaryotic, multi-cellular, triploblastic, motile, heterotrophic, protostomes - bilateral symmetry - eucoelomate, reduced to a small space around the heart, hemocoel - radula (made of chitin) used to feed - mantle encloses the internal organs like a glove - gills are used to exchange oxygen - internal organs of digestion/reproduction in the visceral mass, extends as a muscular foot - open circulatory system, only part of the blood flow is contained in vessels- 3 chambered heart |
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Phylum Annelida |
- Eukaryotic, multi-cellular, triploblastic, motile, heterotrophic, protostomes, bilateral symmetry, eucoelomate - Segmentation (identical regenerative segments, efficient movement, burrowing w setae) -Circular & Longitudinal muscles -coelom divided into septa - closed circulatory system and no lungs, respiration occurs through diffusion |
