Chapter 32 Animal

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Anonymous
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82476
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Chapter 32 Animal
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2011-04-28 10:22:42
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  1. Acoelomate is?
    A solid bodied animal lacking a cavity b/t the gut and the outer body wall.
  2. What is Blastula?
    A hollow ball of cells that marks the end of the cleavage stage during early embryonic development in animals.
  3. What is Cephalization?
    Trend towards concentration of sensory equipment at the anterior end of the body.
  4. Whats Cleavage?
    1)process of cytokiesis in animal cells, pinching of the plasma membrane.

    2)rapid cell division without alot of growth during early embryonic development that concerts the zygote to a balll of cells.
  5. What is Coelomate?
    Animal that has true body cavity lined by tissue.
  6. Ectoderm is what?
    Outer most of the 3 germ layers in animal embryos.
  7. What is Endoderm?
    Inner most of the 3 germ layers in animal embryos.
  8. What is Gastrulation?
    series of cell and tissue movement which bastula stage embryo folds inward , producing gastrula.
  9. What is Larva?
    Free living sexual immature form in some animal like cycles that may differ from the adult animal in morphology, nutrition, and habitat.
  10. What is a Mesoderm?
    Middle primary germ layer in an animal embryo.
  11. What is Pseudocoelomate?
    (p-su-do-coal-o-mate)
    Animal whos body cavity is lined by tissue derived from mesoderm and endoderm.
  12. What is tissues?
    An integrated group of cells with a common funtion, structure, or both.
  13. Protosomes are what?
    characterized by the body cavity forming when a solid of masses of mesoderm split.
  14. What are Deuterostomes?
    characterized by radical cleavage and body cavity forming as outpockets of mesodermal tissue.

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