CHAPTER 7 Key Terms
Match each of the terms on the left with its definition on the right. Click on the term first and then click on the matching definition. As you match them correctly, they will move to the bottom of the activity.
biodiversity biogeographic regions biogeography biomass colonization community competition consumer convergent evolution decomposer dispersal divergent evolution ecological disturbance ecological succession ecology ecosystem endemic evolution extinction food web habitat herbivore invasion keystone species limiting factor migration mutualism niche non- omnivore phytoplankton population predation primary producer propagule sere speciation species stepping- sweepstakes dispersal taxonomy trophic level | A species whose effects support many other species within an ecosystem. An organism that eats both plants and animals. The dried weight of living material. Microscopic bacteria and algae that are suspended in the sunlit portions of water and photosynthesize. An evolutionary process in which two or more unrelated organisms that experience similar environmental conditions evolve similar adaptations. The ecological interconnections among organisms occupying different trophic levels. One of the levels of an ecosystem through which energy and matter flow. The study of the geography of life and how it changes through space and time. A group of individuals that naturally interact and can breed and produce fertile offspring. A continental- An organism that eats only plants. An evolutionary process by which individuals in one reproductively isolated population evolve adaptations different from those of closely related individuals in another population. A sudden event that disrupts an ecosystem. The creation of new species through evolution. The permanent and global loss of a species. An organism that can convert sunlight into chemical energy through photosynthesis. The classification and naming of organisms based on their genetic similarities. The number of living species in a specified region. The successful establishment of a population in a new geographic region without the help of people. A stage of ecological succession that follows ecological disturbance. The step- Restricted to one geographic area. A group of organisms that interact and interbreed in the same geographic area. The seasonal movement of populations from one place to another, usually for feeding or breeding. (or exotic) An organism that has been brought outside its original geographic range by people. Any factor that prevents an organism from reaching its reproductive or geographic potential. The physical environment in which an organism lives. The populations of organisms interacting in a geographic area. The consumption of one organism by another. An organism that cannot produce its own food through photosynthesis. An organism that breaks organic material down into simple compounds. Any material that is able to establish a new population. The living organisms within a community and the nonliving components of the environment in which they live. An interaction between organisms that require the same resources. The process of genetically driven change in a population caused by selection pressures in the environment. The movement of an organism away from where it originated. The study of the interactions between organisms and their environment. An island in an island chain that aids in the dispersal of organisms. A relationship between two species from which both species benefit. The successful and unwanted establishment of a species in a new geographic area as a result of human activity. Dispersal across an extensive region of inhospitable space. The resources and environmental conditions that a species requires. |