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cell the basic unit of structure and function in living things
tissue a group of similar cells that perform a specific function.
organ a structure in the body that is composed of different kinds of tissue.
adaptation a behavior or physical characteristic that allows an organism to survive or reproduce in its environment.
sexual reproduction a reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents.
fertilization the joining of a sperm and an egg.
asexual reproduction a reproductive process involves only one parent and produces offspring that are identical to the parent.
phylum one of the major groups into which biologists classify members o a kingdom.
vertebrate an animal that has a backbone.
invertebrate an animal that does not have a backbone.
Created by: yohali