| A | B |
|---|
| asexual reproduction | a reproductive process that involves only one parent and produces offspring that is genetically identical to parent |
| autotroph | an organism that is able to capture energy from the sunlight or chemicals and use it to make its own food |
| binomial nomenclature | classification system in which each organism is given a unique, two-part scientific name that identifies genus and species |
| branching tree diagram | a diagram that shows probable evolutionary relationships among organismsand the order in which certain characteristics evolved |
| cell | a basic unit of structure and function in a living organism |
| classification | the process of grouping things based on their similarities |
| controlled experiment | an experiment in which only one variable is manipulated (changed) at a time |
| convergent evolution | the process in which unrelated organisms evolve similar characteristics |
| development | the process of change that occurs in an organism's life to produce a more complex organism |
| eukaryote | an organism whose cells contain a nucleus |
| evolution | a change over time: the process in which modern organisms descended from ancient organisms |
| genus | a classification grouping that consists of a number of similary species |
| heterotroph | an organism that cannot make its own food and gets food by eating other livingorganism |
| homeostasis | the condition in which an organism's internal environment is kept stable in spite of changes in the external environment |
| metabolism | the combination sdof chemical reactions through which an organism builds up or breaks down materials |
| multicellular | conisting of many cells |
| nucleus | in cells, a large oval organelle that contains the cell's genetic material in the form of DNA |
| organism | a living thing |
| response | an action or change in behavior that occurs as a result of a stimulus |
| sexual reproduction | a reproductive process that invoves two parents that combine their genetic material to produce a new organism which differs from both parents |
| shared derived characteristics | a characteristic or trait that the common ancestor of a group had a passed on to its descendants |
| species | a group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce |
| spontaneous generation | the mistaken idea that living things arise from nonliving sources |
| stimulus | any change or signal in the encironment tht can make an organism react in some way |
| taxonomy | the scientific study of how living are classified |
| unicellular | made of a single cell |
