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32 Cards in this Set
- Front
- Back
Phylum Porifera |
Sponges asymmetrical adults
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Choanocytes |
A.K.A. Collar Cells Flagella maintain a constant flow of water through these cells in order to filter feed |
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Spicules |
Stiff spikes of calcium carbonate that provide structural support for the body of sponges |
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Asconoid / Syconoid / Leuconoid |
Different growth forms of porifera based on complexity of canal systems and amount/surface area of folds in the walls (increasing in complexity) |
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Phylum Cnidaria |
Jellyfish, Sea anemones, Corals, Hydroids (mostly marine, some fresh water) |
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A saclike body plan with a single opening (the mouth) into the gastrovascular cavity no coelom Diploblastic Radial Symmetry
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Characteristics of Phylum Cnidaria |
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Synapomorphy of Cnidarians |
Cnidocytes (stinging cells) |
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Key components of Cnidarian life cycle |
Polyp (attached to a substrate-reproduce asexually) Medusae (free swimmers-reproduce sexually) [Obelia was observed in lab] |
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Phylum Platyhelminthes |
Free living flatworms and parasitic flatworms |
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(1) wormlike body plan modified into an elongate Bilaterall symmertrical / dorsoventally flattened (2) Triploblastic (3) Organ-system level of organization (4) No true coelom |
Characteristics of Phylum Platyhelminthes |
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Flatworms are nearly all hermaphroditic (true or false) |
True |
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The concentration of neural structures near the posterior end is called cephalization (true or false) |
False
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Cephalization |
The concentration of neural structures near the anterior end of the body |
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Parasitic Flatworms (Phylum Platyhelminthes) |
Absorb nutrients through the body wall Attach to the small intestine by suckers and hooks
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Proglottids |
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Flukes are... |
parasitic worms that infest the lungs, liver, and blood of vertebrates (schitstosoma) |
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Phylum Rotifera |
Small Coelomates Contain a Ciliated Corona Dioecious (separate sexes) |
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Feeding Strategies: Raptorial (capture live prey) Suspension or Filter feeding Environment: Freshwater ponds Few marine species |
Characteristics of Rotifers |
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Rotifer |
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Phylum Annelida |
Segmented worms with repeating body units called somites
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Polychaeta and Clitellata |
Two classes of Phylum Annelida Tube worms and sandworms and earthworms and leeches, respectively |
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Polychaeta (class of phylum annelida) |
Sandworms Head with simple eyes and tentacles; segments with lateral extensions (parapodia) and many bristles (setae); sexes usually separate; predacious; marine |
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Clitellata (Subclass of Oligochaeta, Phylum annelida) |
Earthworms No head; segments without extensions and with few, small bristles; hermaphroditic; terrestrial or freshwater |
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Clitellata (Subclass of Hirudinea, Phylum annelida) |
Leeches No head; segments with superficial rings and without lateral extensions or bristles; anterior and posterior suckers; hermaphroditic; parasitic, feeding on blood; terrestrial or freshwater |
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Characteristics of Phylum Mollusca |
A ventral muscular foot A dorsal visceral mass A mantle that surrounds the visceral mass and often secretes a shell A radula used to scrape off bits of food |
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Phylum Mollusca Class: Polyplacophora |
Chitons Shell of 8 overlapping plates; dorsoventrally flattened foot (used for crawling); radula; marine |
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Phylum Mollusca Class: Gastropoda |
Snails and Slugs Shell is absent or single; often coiled; dorsoventrally flattened foot (used for crawling); radula; marine, freshwater, and terrestrial |
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Phylum Mollusca Class: Bivalvia |
Clams, Oysters, and Mussels Shell of two valves, hinged dorsally; laterally flattened foot (used for digging); no radula; filter feeder; marine or freshwater |
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Phylum Mollusca Class: Cephalopoda |
Octopi and Squids Single shell or none; foot modified to form tentacles; image-producing eyes; horny beak and radula; predaceous; water-jet propulsion; marine |
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In clams (bivalvia) gills are used for _________ and _________, while the muscular foot is used for ___________. |
respiration, feeding, movement |
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Reproductive polyp |
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(Platyhelminthes) |
What phylum is this organism from? |