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science mod 4 test

TermDefinition
Invertebrates Animals that do not possess a backbone
Osculum A large opening on a Sponge through which Filtered water is expelled.
Amoebocytes cells within a sponge that produces its skeletal Structure, perform digestion, and repair Cell damage. Here are the answers to the questions:
vertebrates animals that possess a backbone.
gemmule a group of cells surrounded by a shell made of spicules.
larva an immature stage of an animal that appears different from the adult stage.
metamorphosis A complete morphological change from larva to adult form.
spherical symmetry a body form in which any cut through the organisms center results in identical halves.
bilateral symmetry A body form in which only one longitudinal cut through the organism's center results in identical halves.
radial symmetry A body form in which any longitudinal cut (along the length) through the organism's central axis results in identical halves.
polyp An attached cnidarian Stage, appearing Sac-like or barrel-like.
medusa A Free-Swimming Cnidarian stage, appearing bell-like or umbrella-line.
mesoglea A jelly-like substance between the inner layer and outer layer of cells in a cnidarian.
dorsal Referring to the top (or back) surface of an animal.
ventral Preferring to the bottom (or belly) Surface of an animal.
mutualism A relationship between two or more organisms of different species where both benefit from the association.
commensalism A close relationship between two or more organisms of different species where one benefits, and the other is neither harmed nor benefited.
parasitism A relationship between two or more organisms of different species where one benefits, and the other is harmed.
coelom A body cavity within organisms containing specialized tissue.
gills Extensions of the body containing thin-walled blood vessels that allow for easy absorption of oxygen from outside surface.
Created by: maddietmann10
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