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9 Cards in this Set

  • Front
  • Back
cleavage
succession of mitotic cell divisions without cell growth btwn division cells
blastula
multicellular stage where animal takes the form of a hollow ball
gastrulation
layers of embryonic tissues will dev. into adult body
metamorphosis
developmental transformation taht turns animal into a juvinile, resembling an adult but not yet sexually mature
• True tissue-
collections of specialized cells isolated from other tissues by membranous layers
coelom
fluid or air filled space separating he digestive tract from the outer body wall (coelom)
• Pseudocoelomates-
triploblastic animals that have a body cavity that’s formed from mesoderm and endoderm instead of just mesoderm

pseudocoelomates
• Acoelomates-
triploblastic animals that lack a body cavity
• Coelom good for_____
body cavity is good for fluid cushions, suspending organs, helping prevent internal injury