SI Biol 211 2/18/10What traits do animals have? (Nutrition, cell wall, etc.)What is cleavage?Describe gastrulation and describe the germ layers that arise from it.Name the regulatory genes in animals that control morphology.What is the Cambrian Explosion and how did it arise?What traits are used to form animal groups?Name the three Bilaterian clades.Describe the Phyla Calcarea and Silicea.What protists are considered to be very similar to the ancestor of all animals? What cells are they similar to?Describe the Phylum Cnidaria.Name the Cnidarian classes.Describe the group Bilateria.Describe a generalized life cycle of a parasite.Name the classes of Phylum Platyhelminthes. Are they free living or parasitic?Describe the Phylum Rotifera.Describe the Phylum Mollusca.Name the Molluscan
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