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17 Cards in this Set
- Front
- Back
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Species |
Organisms that can interbreed to produce viable offspring |
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Habitat |
Environment that a species lives in |
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Population |
Group of the same species that lives in the same location at the same time |
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Community |
Group of species that live and interact in the same location at the same time |
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Ecosystem |
Consists of the communities and abiotic factors in their environment |
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Ecology |
The study of the relationships amongst populations, and between the community and its environment |
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Autotroph |
Organism that synthesis its organic molecules from simple, inorganic substances |
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Heterotrophs |
Organism that obtains its organic molecules from other organisms |
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Consumers |
Ingest other organisms that are living/recently killed |
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Detrivores |
Ingests non-living matter |
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Saprotrophs |
Live in or on non-living matter, secrete digestive enzymes and absorb the product of that extra-cellular digestion |
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Food Chain |
Demonstrates the linear feeding relations between different species in a community - Arrows represent flow of energy/matter - First organism is producer, rest are consumers (primary, secondary, tertiary) |
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Food Webs |
Diagram that shows how food chains are linked together into more complex feeding relationships within a community |
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Trophic level |
Refers to the position an organism occupies in a food chain (producer/ primary consumer/ secondary consumer...) |
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Light is the initial energy source for almost all communities |
(statement) |
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Energy transformations in living organisms is never 100% efficient |
About 90% of the energy lost between trophic levels - lost as heat - unconsumed parts of food - used in cellular respiration - excreted/egested |
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Saprotrophic bacteria and fungi (decomposers) recycle nutrients |
Saprotrophic activity of bacteria/fungi free inorganic materials from the dead bodies and waste products oforganisms, ensuring a continual supply of raw materials for the producers |
