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18 Cards in this Set
- Front
- Back
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Ecology |
Scientific study of the interactions among organisms and between organisms and their environment |
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Biosphere |
Part of earth in which life exists levels of Oregon eightincluding land water and air or atmosphere |
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Level of organizers |
Individual, population, community, ecosystem, biome, biosphere |
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Species |
Group of similar organisms that can breed and produce fertile offspring |
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Ecological methods |
Observation experimentation modeling |
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Autotroph (producer) |
Organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds also called a producer |
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Heterotroph (consumer) |
Organism that obtains energy from the food it consumes also called a consumer |
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Photosynthesis |
Process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches |
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Chemosynthesis |
Process by which some organisms such as certain bacteria use chemical energy to produce carbohydrates |
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Herbivore |
Organism that obtains energy by eating only plants |
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Carnivore |
Organism that obtains energy by eating animals |
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Organism that obtains energy by eating both plants and animals |
Organism that obtains energy by eating both plants and animals |
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Detrivore |
Organism that feeds on plants and animal remains and other dead matter |
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Decomposer |
Organism that breaks down and obtains energy from dead organic matter |
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Food chain |
Series of steps in an ecosystem in which organisms transfer energy by eating and being eaten |
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Trophic level |
Step in a food chain or food web |
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Biogeochemical cycles |
Process in which elements chemical compounds and other forms of matter are passed from one organism to another and from one part of the biosphere to another |
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limiting nutrient |
Single nutrient that either is scarce or cycles very slowly limiting the growth of organisms in an ecosystem |
