Ecology
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Created by:
juicyprincess561 on May 27, 2009
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18 terms
Terms | Definitions |
|---|---|
 Symbiosis | A close interrelationship between two or more species. |
| Commensalism | A form of symbiosis in which neither species is harmed nor receives a benefit. (Example: Air Plant; or moss growing on tree bark, etc.) |
| Parasitism | A form of symbiosis in which only one species benefits, while the other is harmed. (Example: Tapeworms, ticks, etc.) |
| Mutualism | A form of symbiosis in which both species benefits. (Example: Lichens, plants in which algae and fungus reside within the plant for mutual benefit; or; Ramora fish cleaning parasites from sharks) |
| Decomposers | Organisms in a food chain that break down dead organic matter into humus. (Most common but important; earthworms, etc.) |
| Humus | The dark, nutrient rich, uppermost layer of the soil that contains partially decomposed organic (plant and animal) matter |
| Ecology | Study of the interrelationship between living and non-living things |
| Habitat | Physical location of where organisms live (NOT a biome) (Example: Lake, Marsh, Tree, Soil, etc.) |
| Biome | A very large ecosystem found in different locations around the planet. They have several things in common, including; general latitude, climate, topography, and niches |
| Niche | The role of an organism in an ecosystem |
| Biotic factor | living things in an ecosystem (Ex. Food, Water, Predators) |
| Abiotic factor | non-living things in an ecosystem (Ex. Soil, Air, Water, temperature, rocks) |
| Limiting factor | any living or non-living factor that restricts the number of individuals that live within the population of an ecosystem (Ex. food, water, predators, light, etc.) |
| Producers | the ecological level of organisms that use sunlight to produce their own food (ex. moss, pine trees, phytoplankton, ferns, etc.) |
| Photosynthesis | carbon dioxide and water (in presence of light) produce oxygen and glucose sugar |
| Herbivores | Organisms that consume producers |
| Carnivores | organisms that consumes only animals |
| Omnivores | organisms that consume both consumers and animals |
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