Marine Biology Mod 4 Vocab: Marine Invertebrates I
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| Invertebrates | Animals that do not possess a backbone | ||||
| Vertebrates | Animals that possess a backbone | ||||
| Osculum | A large opening on a sponge through which filtered water is expelled | ||||
| Amoebocytes | Cells within a sponge that produce its skeletal structure, perform digestion, and repair cell damage | ||||
| Gemmulealont | 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 larval to adult form | ||||
| Spherical symmetry | A body form in which any 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 | ||||
| Bilateral symmetry | A body form in which only one longitudinal cut through the organism's center 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-like | ||||
| 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 | Referring 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 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 | ||||
| Gills | Extensions of the body containing thin-walled blood vessels that allow for easy absorption of oxygen from the outside surface | ||||
| Coelom | A body cavity within organisms containing specialize tissue |
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Created by:
mrpicard
on 2008-10-09