Intro to Animal Diversity

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Presentation transcript:

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