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Animal Strategies I. Body Organization A. Complexity From Cells to Tissues to Organs to Systems
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B. Tissues 1. Epithelium Figure 40.5 2. Connective Figure 40.5
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3. Muscle Figure 40.5 4. Nervous Figure 40.5
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5. Embryonic Figure 47.1
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Developmental stages of an Echinoderm Figure 47.7
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Differentiation yields endoderm, mesoderm, and ectoderm from the inner cell mass. Figure 47.16
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C. Systems Which body systems are involved in movement? Which body systems are involved in homeostasis? Which body systems are involved in energy capture? Which body systems are involved in regulation?
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Which body systems are involved in reproduction? Which body systems are involved in protection? What are the body systems seen in animals?
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II. Body Plan A. Traditional View Based on Embryonic and Anatomic evidence 1. Evidence a. Metamorphosis Figure 32.2 b. Remodeling Figure 32.4
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2. Grades - 35 animal clades based on a. Tissues Present Figure 32.10 & 11 b. Body Symmetry Figure 32.7
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c. Body Cavities Figure 32.8 d. Development Patterns Figure 32.9
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B. Molecular View Based on DNA and rRNA evidence? 1. Evidence a. Lophotrochozoa Figure 32.13 b. Ecdyozoa Figure 32.12
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C. Comparison of Views. Figure 32.10 & 11
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III. Animal Phyla A. Invertebrata 1. Parazoans Sessile adults, suspension feeders, hermaphroditic, and special cells called choanocytes and amebocytes a. Phylum Porifera
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Figure 33.4
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2. Radiata Cnidocytes and Nematocysts a. Phylum Cnidarians
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b. Phylum Ctenophora Comb jellies
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3. Protostomia a. Lophotrochozoa Flat worms i. Phylum Platyhelminthes
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Figure 33.12 Figure 33.10
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ii. Phylum Nemertea Proboscis or Ribbon worms with complete digestive tract and closed circulatory system. Figure 33.15
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iii. Phylum Mollusca
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Phylum Mollusca Figure 33.17 Figure 33.20 Figure 33.18 Figure 33.22
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iv. Phylum Annelida Figure 33.24 & 25
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b. Ecdysozoa Figure 33.26 Figure 33.27 Roundworms = moist habitat; non-segmented, short tapered ends, a cuticle exoskeleton, pseudocoelomic, and sexual i. Phylum Nematoda
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ii. Phylum Arthropoda
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Phylum Arthropoda Figure 33.31 Figure 33.33 Figure 33.36 Figure 33.38
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a. Phylum Echinodermata 4. Deuterostomia
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Radial yet segmented Figure 33.40
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B. Vertebrata 1. Deuterostomia a. Phylum Chordata Notochord, Dorsal Nerve Cord, Pharyngeal Slits, & Post anal Tail i. “Invertebrata” Chordates Figure 34.4 tunicates lancelets Figure 34.5
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ii. Gnathostomes? Jawless Fish Figure 34.9 Figure 34.10 Notochord, Dorsal Nerve Cord, Pharyngeal Slits, & Post anal Tail Myxini & Petromyzontida
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iii. Chondrichthyes Figure 34.15 Gnathostomata or jawed with no bones
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iv. Osteichthyes Figure 34.18 Gnathostomata or jawed fish with bone
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v. Amphibiain and out plus tetrapod Figure 34.21
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vi. Reptilia Out with Amniote eggs Figure 34.27
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vii. AvesFeathers with Amniote eggs Figure 34.30
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viii. Mammalia Hairy with breasts Monotremes (eggs) Marsupials (pouched) Eutherians (placentals) Figure 34.35
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