Intro to Animals

Card Set Information

Author:
extollo5
ID:
34760
Filename:
Intro to Animals
Updated:
2010-09-14 19:31:25
Tags:
animals
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Description:
chapter 32 vocab and key concepts
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  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

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