Echinoderms and Invertebrate Chordates Questions.

Read the pages listed before answering the questions. Read pages 87-93.…

  1. Describe the echinoderm endoskeleton.
  2. Give an example of an organism in each class of living echinoderms.
  3. Create a labeled drawing that explains how the tube feet of echinoderms allow them to “walk.” YOU HAVE TO HAND DRAW THIS!
  4. Adult sea stars and other echinoderms have obvious radial symmetry. What evidence supports the claim that echinoderms evolved from an ancestor with bilateral symmetry?
  5. Name and describe the two subphyla of invertebrate chordates.

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