Intro to Animal Diversity Chapter 32
What Is An Animal?
What Is An Animal?
What Is An Animal? Multicellular Heterotrophic Eukaryotic No cell walls – held together with structural proteins, mainly collagen
Body Plans Animal phyla are categorized based on features that are either present or absent. Features often included: Symmetry Tissue layers Body cavities Protostomes vs. deuterostomes
Body Symmetry Asymmetrical Radial Bilateral Dorsal & ventral Anterior & posterior
Body Tissues
Body Tissues No true tissues (no gastrulation) Diploblastic Ectoderm & endoderm Triploblastic Also has mesoderm
Body Cavities Acoelomate Pseudocoelomate Coelomate
Protostomes vs. Deuterostomes
Protostomes vs. Deuterostomes