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Kingdom Animalia


Animals show 3 types of symmetry

1. Asymmetrical

2 . Radial Symmetry

3. Bilateral symmetry

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Embryology & Animal Classification

  1. Fate of the blastopore
  2. Type of cleavage in gastrula formation


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  1. Acoelomates have no internal body cavity
  2. Pseudocoelomates have an incompletely formed body cavity
  3. Coelomates have a fully developed body cavity completely lined by mesoderm

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Mr. Stanley

Last updated: June 23, 2001