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26 Cards in this Set
- Front
- Back
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Ecology |
the study of the interactions among organisms and their environments |
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Biotic |
relating to or resulting from living things, especially in their ecological relations. |
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Abiotic |
Nonliving things |
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Autotroph |
Make their own food (usually through photosynthesis) |
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Heterotroph |
Organisms that obtain their food from the environment |
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Herbivore |
animals that feed only on plants. |
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Carnivore |
animals that feed on other animals |
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Predator |
feed on prey they kill |
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Scavenger |
feed on dead animals they find |
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Omnivore |
animal that feeds on both plants and animals |
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Decomposer |
organisms that feed on dead plants & animals |
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Symbiotic relationship |
A relationship between two closely associated organism in which at least one benefits. |
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Mutualism |
Both organisms benefit |
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Parasitism |
One organism benefits while the other is harmed |
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Commensalism |
One organism benefits while the other is not affected |
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Biosphere |
is the global ecological system integrating all living beings and their relationships. |
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Ecosystem |
A biological community of interacting organisms and their physical environment. |
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Community |
An interacting group of various species in a common location. |
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Population |
Is the number of all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding. |
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Niche |
Refers to the way in which an organism fits into an ecological community or ecosystem. |
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Food Chain |
A series of organisms through which food energy is passed. |
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Producer |
Must be first organism in a food chain. |
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Primary Consumer |
(herbivores or omnivores) |
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Secondary Consumer |
(carnivores or omnivores) |
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Food Web |
Interconnected food chains - different levels and there are many at each level. This is more accurate of an ecosystem. |
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Biomagnification |
Each higher level of consumer accumulates large quantities of poisonous substances.Examples: DDT (pesticide) and mercury |
