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24 Cards in this Set
- Front
- Back
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cell
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The basic uniy of structure and function in living things
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tissue
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A group of similar cells that perform a a specific function
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organ
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A group of several different tissues
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adaptation
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Structures or behaviours that allow animals to perform these basic functions in their environments
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sexual reproduction
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The process by which a new organims develops from the joining of two sex cells- a male sperm cell and a female egg cell
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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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The 35 major groups in which bioligists have classified animals
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vertebrate
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Animals with a backbone
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invertebrate
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Animals without a backbone
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bilateral symmetry
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When two halves of an object are mirror images
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radial symmetry
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When an object has many lines of symmetry that all go thrrough a central point
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larva
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An immature form of an animal that looks very different from the adult
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cnidarians
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Invertebrates that have stinging cells and tale food into a central body cavity
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polyp
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A vase-shaped body plan whose mouth opens at the top and its tentacles spread from the mouth
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medusa
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A bowl-shaped body plan whose mouths open downward and its tentacles trail down
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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
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host
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The orgaismin ot on which a parasite lives
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free-living organism
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Does not live in or on other organisms
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scavengers
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Organisms that feed on dead or decaying material
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anus
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An opening through which waste exits the animals body
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closed circulatory system
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In which blood moves only within a connected network of tubes called blood vessels
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