BioG 1109 Taxonomy For Prelim 2

BioG 1109 Taxonomy For Prelim 2 - Animalia True...

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Animalia True Tissues (derived trait) Bilateral Symmetry (derived trait) Deuterostomes Echinodermata Chordata [traits of chordates include?] - have a dorsal hollow nerve, a notochord, pharyngeal slit, post-anal tail, and body segmentation. Tunicates and Lancets - tunicates are suspension feeders, deepest branch of chordate. Lancets feed on suspended particles, wriggles into sand with head sticking out, have 4 chordate features Craniates -all chordates that have a head Hagfish- skull composed of cartilage, the most primitive cariates Vertebrates- more extensive skull and a backbone (vertebral column), cloaca - a common chamber that receives the digestive, urinary, and reproductive tracts, and vertebrae Lampreys- oldest vertebrates, extinct 360 mya, paired fins and tails, hinged jaws, rasping tongue to penetrate skin Jawed Vertebrates- hinged jaws from gill skeletol and Chondrichthyes- sharks and rays, lateral line system- row of sensory organs that are sensitive to water pressure detect vibration of other fish swim
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This note was uploaded on 11/18/2008 for the course BIO 1109 taught by Professor -2 during the Fall '08 term at Cornell.

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BioG 1109 Taxonomy For Prelim 2 - Animalia True...

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