Chapter 1: Exploring Life
Chapter 32: Intro to Animal Diversity
32.1 Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers
• Nutritional Mode- heterotrophs,
• Cell Structure and Specialization- multicellular eukaryotes, lack cell walls, collagen, nervous tissue, muscle tissue
• Reproduction and Development- zygote, cleavage, blastula, gastrulation, embryonic tissue layers, gastrula, endoderm, ectoderm, blastocoel, blastopore, larva, metamorphosis, Hox genes
Concept Check- 1,2
32.2 The history of animals may span more than a billion years
• Neoproterozoic Era- Ediacaran fauna
• Paleozoic Era- Cambrian Explosion; hard, mineralized skeletons
• Mesozoic Era
• Cenozoic Era
Concept Check- 1,2
3. Animals can be characterized by “body plans”
• Intro- grade, body plan
• Symmetry- radial symmetry, bilateral symmetry, dorsal, ventral, anterior, posterior, cephalization
• Tissues- germ layers, ectoderm, endoderm, diploblastic animals, triploblastic animals, mesoderm
• Body Cavities- body cavity, coelom, pseudocoelom, acoelomates
Concept Check- none
Testing Your Knowledge 1, 2, 3, 4, 6, 9, 10
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