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9.2 - 9.4 Science

bilateral symmetry one line that divides it into halves that are mirror images.
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.
cnidarians invertebrates that have stinging cells and take food into a central body cavity.
polyp vase-shaped body plan.
medusa bowl-shaped body plan.
colony a group of many individual animals.
coral reef built by cnidarians.
parasite an organism that lives inside or on another organism.
host the organism in or on which a parasite lives.
free-living organism does not live in or on other organisms.
scavengers feed on dead or decaying material
anus an opening at the far end of the tube in which wastes exit.
closed circulatory system blood moves only within a connected network of tubes called blood vessels.
Created by: S730503