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kingdoms
| Term | Definition |
|---|---|
| adaptation | a behavior or physical characteristic that allows an organism to survive or reproduce |
| fertilization | the joining of a sperm and egg |
| vertebrate | an animal that has a backbone |
| invertebrate | Animals without a backbone. |
| Bilateral Symmetry | One line that divides it into halves that are mirror edges. |
| Radial Symmetry | Many lines of symmetry that all go through a central point. |
| larva | An immature form of an animal that looks very different from the adult. |
| Cnidarian | Invertebrates that have stinging cells and take food into a central body cavity. |
| Polyp | The vase-shaped body plan. |
| Medusa | The bowl-shaped body plan. |
| Parasite | An organism that lives inside or on another organism. |
| Host | The organism in or on which it lives |
| Scavenger | Organisms that feed on dead or decaying material |
| Closed Circulatory System | Blood moves only within a connected network of tubes called blood vessels |
| Mollusk | Invertebrates with soft, unsegmented bodies that are often protected by a hard outer shell. |
| Open Circulatory System | the blood is not always inside blood vessels. |
| Gill | Organs that remove oxygen from the water. |
| Gastropod | The largest group of mollusk. |
| Cephalopod | An ocean-dwelling mollusk whose foot is adapted as tentacles that surround its mouth. |
| Bivalve | A second group of mollusks, that include oysters, clams, scallop, and mussels. |
| Herbivore | Animals that only eat plants. |
| Carnivore | Animals that only eat other animals. |
| Omnivore | Animals that eat both plants and animals. |
| Radula | A flexible ribbon of tiny teeth, to obtain food |
| Arthrodpod | A member of the arthropod phylum. |
| Exoskeleton | Outer skeleton |
| Molting | The process of shedding an outgrown exoskeleton. |
| Crustacean | An arthropod that has two or three body sections, five or more pairs of legs and two pairs of antennae. |
| Complete Metamorphosis | A type of metamorphosis characterized by four dramatically different stages. |
| Gradual Metamorphosis | A type of metamorphosis in which an egg hatches into a nymph that resembles an adult, and which has no distinctly different larval stage. |
| Arachnid | An arthropod with two body sections, four pairs of legs, and no antennae. |
| Insect | Arthropods with three body sections, six legs, one pair of antennae, and usually one or two pairs of wings. |
| Thorax | The section to which wings and legs are attached. |
| Pupa | The third stage of complete metamorphosis, in which an insect changes from a larva to an adult. |
| Nymph | An egg hatches into this stage. |
| Echinoderm | A member of the phylum echinodermata. |
| Endoskeleton | An internal skeleton that the skin of most echinoderms is stretched over. |
| Water Vascular System | The internal system of fluid-filled tubes in echinoderms. |
Created by:
christakis
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