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23 Cards in this Set
- Front
- Back
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cell
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the basic unit of structure and function in living things
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tissue
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a group of similar cells that perform a specific function
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organ
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a structure that is composed of different kinds of tissue
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adaptation
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a characteristic that helps and organism survive or reproduce in its environment
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sexual reproduction
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the process by which a new organism develops from the joining of two sex cells
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fertilization
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the joining of an egg cell and a sperm cell
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asexual reproduction
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the process by which a single organism produces a new organism identical to itself
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phylum
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one of about 35 major groups into which biologists classify members of the animal kingdom
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vertebrate
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the bones that make up the backbone of an animal
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bilateral symmetry
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line symmerty; the quality of being divisible halves that are mirror images
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radial symmetry
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the quality of having many lines of symmetry that all pass through a central point
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larva
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the immature form of an animal that looks very different from the adult
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cnidarian
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an invertable animal that uses stinging cells to capture food and defend itself
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polyp
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a cnidarian body plan characterized by a vase-like shape and usually adapted for a life attached to an underwater surface
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medusa
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a cnidarian body plan characterized by a bowl shape and adapted for a free-swimming life
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colony
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a group of many individual animals
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coral reef
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a diverse environment named for the coral animals that make up its stony structure
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parasite
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an organism that lives inside or on another organism and takes food from the organism in or on which it lives
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host
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an organism that provides food to a parasite that lives on or inside it
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free-living organism
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an organism that does not live in or on other organism
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scavenger
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an organism that feeds on dead or decaying material
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anus
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the opening at the end of an organism's digestive system through which wastes exit
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closed circulatory system
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a circulatory system in which blood moves only within a connected network of tubes called blood vessels
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