Animal Diversity I - Phylum Platyhelminthes (planaria,...

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ANIMAL DIVERSITY I
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Learning Objectives (1) Identify and classify all animals (micro-and macroscopic) presented in lab (2) Name appropriate distinguishing characteristics of all phyla (3) Evaluate animals according to level of organization, body plan, symmetry, germ layers, coelom development, digestive structure (4) Name specified structures, systems and functions presented for each specimen.
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Symmetry
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Acoelomates
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Pseudocoelomates
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Eucoelomates
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Phylum Porifera (sponges) --Cellular level of organization -- No germ layers -- Spicules (organic and inorganic matrix) -- Evolutionary trend increased S.A./vol.
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Spicules
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Phylum Cnidaria (hydra, jellyfish, corals, anemones) -- Tissue level of organization -- Two germ layers -- Radial symmetry -- Polyp or medusa body form -- Cnidoblasts with nematocysts -- Gastrovascular cavity
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Cnidaria
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Cnidaria Coral Anemone Jellyfish Hydra What characteristics do these organisms have in common?
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Unformatted text preview: Phylum Platyhelminthes (planaria, flukes, tapeworms)-- Organ level of organization-- Triploblastic (3 germ layers)--Bilateral symmetry-- Cephalization-- Acoelomate-- Digestive system = blind sac Platyhelminthes Planaria Tapeworm Fluke What characteristics do these organisms have in common? Phylum Nematoda (roundworms, hookworms, pinworms, heartworms)-- Pseudocoelom-- Tube-within-a-tube body plan Ascaris, a roundworm parasite found in humans and pigs Phylum Rotifera Rotifers Plus 6 other pseudocoelomate phyla Phylum Mollusca (bivalves, snails, octopus, squid)-- True coelom (eucoelomate)-- Tube-within-a-tube body plan-- Protostome-- Open circulatory system with hemocyanin (respiratory pigment)-- Mantle-- Muscular foot Mollusca Slug Conch Clams Squid What characteristics do these organisms have in common? What class does each of them belong?...
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This note was uploaded on 04/02/2012 for the course BIOLOGY 11034 taught by Professor Paululrich during the Fall '11 term at Georgia State University, Atlanta.

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Animal Diversity I - Phylum Platyhelminthes (planaria,...

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