AP Biology 2007-2008 Domain Bacteria Domain Archaea Domain Eukarya Common ancestor Kingdom: Animals Domain Eukarya Click the "Slide Show" button at the.
Chapter 18. Defining Animals Multicellular, heterotrophic eukaryotes that obtain nutrients by ingestion or eating food No cell walls for structure Joined.
Animal Body Plans. Major Body Plan Characteristics of Animals Symmetry Primary Germ Layers Gut Organization Body Cavity Segmentation Skeletal Systems.
1 Unit 5.1 Phylum Platyhelminthes. 2 Phylum Platyhelminthes Flat worms Triploblastic – three primary germ layers Acoelomate – no body cavity Bilateral.
AP Biology 2007-2008 Domain Eubacteria Domain Archaea Domain Eukarya Common ancestor Kingdom: Animals Domain Eukarya.
Animal Evolution. I. Animal traits A. Heterotrophic B. Mobile C. Lack cell walls D. Possess nerve and striated muscle.
