Unit 1: Ecology
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Created by:
Mrs_Boccher on October 2, 2012
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Description:
Biology at Northwood High School
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38 terms
Terms | Definitions |
|---|---|
 Abiotic | Non-living |
| Biotic | Living or once-living |
| Biodiversity | Variety of living organisms in an ecosystem or given area |
| Consumer | An organism that gets its energy from something biotic |
| Producer | An organism that makes its own food source using something abiotic |
| Herbivore | Consumes only plant products |
| Omnivore | Consumes both plant and animal products |
| Carnivore | Consumes only animal products |
| Decomposer | Breaks down dead or decaying matter for energy |
| Scavenger | Feeds on dead matter for energy |
| Food chain | Shows the flow of energy between organisms at different trophic levels |
| Trophic Level | A step in the food chain |
| Food Web | Shows the flow of energy between several interconnecting food chains |
| Ecological Pyramid | Used to show the relationship between biomass and energy at each trophic level |
| Biomass | The total living mass in an ecosystem or given area |
| Symbiosis | A close and usually long-term relationship between organisms of two different species |
| Mutualism | A type of symbiosis in which both species benefit |
| Commensalism | A type of symbiosis in which one organism benefits and the other remains unaffected |
| Parasitism | A type of symbiosis in which one organism benefits while harming the other |
| Predation | A relationship in which one organism hunts, kills, and consumes the other |
| Predator | An animals that hunts and kills other animals for food |
| Prey | An animal that is hunted and killed for a food source |
| Interspecies Competition | When organisms of different species compete for the same resource |
| Intraspecies Competition | When organisms of the same species compete for the same resource |
| Niche | The role of an organism in its ecosystem |
| Invasive Species | A species that has entered an ecosystem in which it is not native to where it survives and reproduces |
| Transpiration | When water evaporates from the leaves of plants |
| Evaporation | When water moves from a liquid to gas state |
| Condensation | When water vapor condenses to a liquid in clouds |
| Precipitation | When water falls towards the surface of the earth as rain, snow, sleet, or hail |
| Seepage | When water seeps into the ground |
| Runoff | Water that flows off the surface of the land towards larger bodies of water |
| Uptake | When plants take water up into their roots |
| Respiration | When organisms take in oxygen and release carbon dioxide and water vapor |
| Fossil Fuels | Coal, natural gas, or gasoline that can be burned for fuel |
| Photosynthesis | A process that uses carbon dioxide and water to make glucose and oxygen |
| Nitrogen Fixation | A process in which bacteria convert nitrogen gas to usable nitrates |
| Succession | A series of predictable events that lead to changes in an ecosystem |
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