Marine Biology Mod 4 Vocab: Marine Invertebrates I – Flashcards
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Which Gospel is written by a doctor?
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Luke
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Invertebrates
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Animals that do not possess a backbone
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Vertebrates
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Animals that possess a backbone
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Osculum
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A large opening on a sponge through which filtered water is expelled
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Amoebocytes
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Cells within a sponge that produce its skeletal structure, perform digestion, and repair cell damage
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Gemmulealont
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A group of cells surrounded by a shell made of spicules
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Larva
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An immature stage of an animal that appears different from the adult stage
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Metamorphosis
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A complete morphological change from larval to adult form
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Spherical symmetry
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A body form in which any cut through the organism's center results in identical halves
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Radial symmetry
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A body form in which any longitudinal cut (along the length)through the organism's central axis results in identical halves
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Bilateral symmetry
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A body form in which only one longitudinal cut through the organism's center results in identical halves
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polyp
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An attached cnidarian stage, appearing sac-like or barrel-like
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Medusa
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A free-swimming cnidarian stage, appearing bell-like or umbrella-like
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Mesoglea
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A jelly-like substance between the inner layer and outer layer of cells in a cnidarian
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dorsal
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Referring to the top (or back) surface of an animal
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Ventral
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Referring to the bottom (or belly) surface of an animal
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Mutualism
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A relationship between two or more organisms of different species where both benefit from the association
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Commensalism
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A relationship between two or more organisms of different species where one benefits and the other is neither harmed nor benefited
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Parasitism
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A relationship between two or more organisms of different species where one benefits and the other is harmed
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Gills
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Extensions of the body containing thin-walled blood vessels that allow for easy absorption of oxygen from the outside surface
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Coelom
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A body cavity within organisms containing specialize tissue
