L10 - Lab 9 - Invertebrates II

L10 - Lab 9 - Invertebrates II - Invertebrate II:...

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Invertebrate II: Echinodermata Arthropoda Readings: Lab Manual pgs 179-191 . Campbell 8 th ed. 683-697, 7 th ed. 655-669.
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31.1 A Current Phylogenetic Tree of Animals
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32.1 A Current Phylogenetic Tree of Protostomes (Part 2) appendages
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32.1 A Current Phylogenetic Tree of Protostomes (Part 1)
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31.12 Planktonic Larval Forms of Marine Animals
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Water vascular system Radial symmetry* Calcareous endoskeleton Dermal branchiae
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Phylum Echinodermata Classes: Asteroidea - starfsh (sea stars) Echinoidea - sea urchins Holothuroidea - sea cucumbers (little endoskeleton) Ophiuroidea - brittle stars (slender arms, no dermal branchiae) Crinoidea - sea lilies, Feather stars (flter Feeders)
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Asteroidea
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Asteroidea
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Echinoidea
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Echinoidea
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Holothuroidea
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Holothuroidea
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Ophiuroidea
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Ophiuroidea
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Crinoidea
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Phylum Echinodermata Symmetry:Bilateral in larvae, radial in adult Other body plans: # Germ Layers: 3 Metamerism:Some internal Coelom:Yes (deuterostomous), but reduced Skeletal Sys:CaCO 3 endoskeleton Cephalization:None Nervous Sys:Diffuse Digestive Sys:(StarFsh) Open clam with tube feet - evert cardiac stomach - secrete mucous + digestive juices from hepatic caeca - food into pyloric stomach, digestive caeca - rectal caeca - anus Circulatory Sys:Water vascular system Respiratory Sys:Respire through dermal branchiae, tube feet, cloaca Resp. Pigment:None Excretory Sys:Diffusion Sexual Cycle:Dioecious, ext. fertilization
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L10 - Lab 9 - Invertebrates II - Invertebrate II:...

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