What is the cavity type of animals that are triploblastic? What is known as the closest living relative of animals? What are parasites that are specialized to live in gut?

Name: Biology II; Chapter 3 Notes (3.1-3.4)
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Chapter 3 (Part 1) Concept 3.1 (Sponges, Cnidarians, Ctenophores) What is an Animal?  Symmetry o Radial or bilateral  Nutritional Mode o Heterotrophic via ingestion  Cell Structure o Multicellular o No cell wall o Muscle and nerve cells  Reproduction and Development o Cleavage and gastrulation How Many Cell Layers are There?  No term for animals with a single cell layer (sponges)  Diploblastic: o Animals with only 2 germ layers o Cnidarians and Ctenophores  Triploblastic: o Animals with 3 germ layers o Third layer is the mesoderm Body Cavities  All animals that are triploblastic have a cavity type: o Acoelomate  No bo