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Intro to Animals

  1. Four features of an animals body plan
    • number of embryonic tissue layers
    • type of body symmetry and degree of cephalization
    • type of body cavity (if any)
    • embryo development (dueterostomate, protostomate, etc.)
  2. diploblast
    • 2 tissues
    • ectoderm
    • endoderm
  3. triploblast
    • 3 tissues
    • ectoderm
    • mesoderm
    • endoderm
  4. ectoderm
    outer tissue layer
  5. endoderm
    inner tissue layer
  6. mesoderm
    middle tissue layer
  7. 3 types of symmetry
    • Asymmetry - no symmetry
    • Radial Symmetry - multiple planes of symmetry
    • Bilateral Symmetry - one plane of symmetry
  8. bilateral animals also have __________.
    heads
  9. Acoelom
    no body cavity
  10. Coelom
    "true" body cavity with mesoderm lining both inner and outer layers
  11. Psuedocoelom
    body cavity with mesoderm on outer layer only
Author
extollo5
ID
34760
Card Set
Intro to Animals
Description
chapter 32 vocab and key concepts
Updated

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