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Prelim 2 Review Sheet

Prelim 2 Review Sheet - Prelim 2 Review...

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Prelim 2 Review Deuterostomes -blastopore formed during gastrulation turns into the anus Echninodermata =sea stars, sea urchins, sand dollars -spiny skin -radial symmetry in adults -endoskeleton -water vascular system=suction cup-like tube feet used for respiration and locomotion Chordata =4 characteristics -dorsal hollow nerve cord -notochord - pharyngeal slits =gills -muscular post-anal tail - Tunicates and Lancelets =marine invertebrates that use pharyngeal slits for suspension feeding - Craniates =have a brain (all except tunicates and lancelets) Lampreys =jawless vertebrates Vertebrates =endoskeletons have a skull, backbone is made up of vertebrae Jawed Vertebrates =sharks (chondrichthyes), ray-finned fishes, lobe-fins Chondrichthyes =sharks and rays-suspension feeders, predators Osteichthyes =bony fishes -skeleton reinforced with a hard matrix of calcium phosphate -operculi that move water over the gills -buoyant swim bladder Ray-finned fishes =tuna, trout, goldfish
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  • Fall '06
  • WINKLER,D.
  • vertebrae Jawed Vertebrates=sharks, vertebrae Jawed, bladder Ray-finned fishes=tuna, amnion-lay shelled eggs

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