capter 22
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Flat cells that line the outer surface of a sponge | pinacocytes
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Cells that regulate flow of water into a sponge | porocytes
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Jellylike center layer in a sponge | mesohyl
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Ameoboid cells in the mesohyl used for digestion and reproduction | mesenchyme cells
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Inner layer of cells in a sponge | choanocytes
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part of choanocyte that filters food | collar
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part of choanocyte that creates the flow of water | flagella
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skeleton of a sponge | spicules
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simplest body form of a sponge | ascon
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folded body form of a sponge | sycon
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extensively branched body form of a sponge | leucon
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one animal has both male and female sex cells | monoecoius
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reproductive capsule produced by freshwater sponges in harsh conditions | gemmule
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where water exits the sponge | osculum
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type of symmetry in sponges | assymetry
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cell layers of sponges | endoderm and ectoderm
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outer layer of cnidarians | epidermis
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inner layer of cnidarians | gastrodermis
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center layer of cnidarians | mesoglea
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cells used for attachment, defense and feeding | cnidocytes
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fluid-filled capsule with an operculum | cnida
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type of body support in the polyp stage | hydrostatic skeleton
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larval stage of a cnidarian | planula
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feeding polyp of a colonial hydra polyp | gastrozooid
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reproductive polyp of a colonial hydra polyp | gonozooid
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tentacle that contains the mouth of the medusa stage | manubrium
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class hydrozoa | hydra
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class schyphozoa | jellyfish
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location for jellyfish sensory structures | rhopalium
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sense light | photoreceptors
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sense smell | olfactory receptors
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move away from light | negative photaxis
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immature polyp of a jellyfish | scyphistoma
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immature medusa of a jellyfish | ephrae
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class cubozoa | box jellies
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class anthozoa | anemonies and corals
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type in internal symmetry of anthozoans | biradial
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tissue that divides anthozoans in sections | messenteries
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structure that attaches anthozoans to the substrate | basal disc
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male gametes mature first to prevent self-fertilizatin | protandry
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phylum ctenophora | sea walnuts, comb jellies
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eight bands of cilia for ctenophora locomotion | comb rows
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adhesive cells to capture prey in ctenophorans | colloblasts
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type of sexual reproduction on ctenophorans | monoecious
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type of cnidocyte that produces a toxis | nematocyst
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asexual, sessile form of a cnidarian | polyp
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sexual free-swimming form of a cnidarian | medusa
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