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23 Cards in this Set
- Front
- Back
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Ecology |
the scientific study of interactions between organisms and their environments, focusing on energy transfer |
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Biotic Factors |
all living organisms inhabiting the Earth |
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Abiotic factors |
nonliving parts of the environment (i.e. temperature, soil, light, moisture, air currents) |
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Organism |
any unicellular or multicellular form exhibiting all of the characteristics of life, an individual.The lowest level of organization |
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Population |
a group of organisms of one species living in the same place at the same time that interbreed |
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Community |
several interacting populations that inhabit a common environment and are interdependent. |
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Ecosystem |
populations in a community and the abiotic factors with which they interact (ex. marine, terrestrial) |
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Biosphere |
life supporting portions of Earth composed of air, land, fresh water, and salt water. |
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Niche |
the role a species plays in a community; its total way of life |
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Habitat |
the place in which an organism lives out its life |
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Limiting Factor |
any biotic or abiotic factor that restricts the existence of organisms in a specific environment. |
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Producer |
all autotrophs (plants), they trap energy from the sun |
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Consumer |
all heterotrophs: they ingest food containing the sun’s energy |
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Primary consumers |
Eat plants, herbivores |
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Secondary, tertiary consumers |
-Prey animals -Carnivores |
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Predators |
hunt prey animals for food |
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Scavrengers |
Feed on carrion, dead animals |
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Omnivores |
Eat plants and animals |
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Decomposers |
Breakdown the complex compounds of dead and decaying plants and animals into simpler molecules that can be absorbed |
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Commensalism |
one species benefits and the other is neither harmed nor helped |
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Commensalism |
one species benefits and the other is neither harmed nor helped |
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Parasitism |
one species benefits (parasite) and the other is harmed (host) |
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Mutualism |
beneficial to both species |
