Lab report Echinodermata

Lab report Echinodermata - Austin Horenkamp Ms.Stockmayer...

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Austin Horenkamp Ms.Stockmayer Zoo2010L Tuesday 9:30-11:20 Lab on Echinodermata Methods and materials 1. We will be able to dissect and look at the different functions of echinoderm anatomy. 2. Should be able to get a clear picture of the inside of a sea cucumber, and a starfish including the tube feet, and ring canal. 3. We should be able to determine the differences between each of the classes inside of Echinodermata. Table 17.1 Comparative Table of echinoderm characteristics Characteristic Seastar Brittle star Sea urchin Sea cucumber Symmetry Radial as young, pentradial as adults Pentradial as adults Radial symmetry as an adult Pentaradial cymmetry as an adult Body shape Five arms, star shaped, an aboral and oral side. Marked off from central disc, flexible arms,vertebral ossicles Round shape, lots of spines sticking out. Orally, aborally elongated, mouth contains tentacles. Tube feet Present with suckers Present, without suckers Located in all the five ambulacral regions Scattered throughout the body but really small. Endoskeleton Mesodermal endoskeleton They do have
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  • Spring '09
  • Obenauf
  • Zoology, tube feet, Papulae

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