Echinoderms
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Echinoderms

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Nate Wasden

Nate Wasden
Mr. Collins
Biology
Period 4

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Echinoderms Echinoderms Presentation Transcript

  • Echinoderms Echino means “spiny” Dermis means “skin” By Nate Wasden
  • What Is It…? • Echinoderm: a classification of marine animals Echinoderms come in all sorts of various shapes and sizes.
  • Characteristics -Two-sided body the side in which the mouth is located is referred to as the “oral surface” the opposite site is called the “aboral surface” -Endoskeleton: an internal skeleton formed by hardened plates of calcium carbonate
  • Characteristics -Water Vascular System fulfills many crucial bodily functions (respiration, circulation, movement, etc.) -Five-Part Radial Symmetry body parts mostly come in multiples of five
  • Water Vascular System Echinoderms feature a unique system of internal tubes that assist the animal. • It is filled with fluids. • It opens to the outside of the echinoderm through its “madreporite.” • “Tube feet” are attached to each radial canal.
  • Facts • 1. Respiration and circulation both are performed in the Water Vascular System • 2. Echinoderms have no head; they, therefore, lack a developed nervous system
  • Facts • 3. Echinoderms have sensory cells that can detect light, gravity, and chemicals • 4. There are over seven thousand species of echinoderms • -sea urchins--sand dollars--brittle star--sea cucumbers--sea stars--sea stars--sea lilies--feather stars--and more
  • Works Cited • 1. Miller, Kenneth R., and Joseph S. Levine. Prentice Hall Biology. Upper Saddle River, N.J.: Prentice Hall, 2002. Print. • 2. Photograph. Web. <http://www.cyhaus.com/marine/echinoderms/STARFISH1.jpg>. • 3. Photograph. Web. Http://kentsimmons.uwinnipeg.ca/16cm05/1116/33- 37-EchinodermsCollage.jpg. • 4. “Sand Dollar.” Web. 25 Mar. 2010. • 5. “The Starfish Sea-urchins and allies (Phylum Echinodermata).” The Earth Life Web. Web. 25