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Related Flashcards
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Cards In This Set
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Define: biomass
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The total mass of living plants, animals, fungi, and bacteria in a given area
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Define: energy flow
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Flow of energy from an ecosystem to an organism and from an organism to another
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What are the producers of the food chain?
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Plants, they "produce" food in the frorm of carbohydrates during photosynthesis
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Define: consumer
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An organism that feeds on a producer
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Decomposition
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Breaking down or organic wastes and dead organisms
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Biodegration
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Action of living organisms such as bacteria to break down dead organic matter
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Decomposers
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Change wastes and dead organisms into usable nutrients
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Food chains
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Models that show the flow of energy from plant to animal and from animal to animal
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Trophic level
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Each step in a food chain
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Food chain trophic levels
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Primary producers (phytoplankton, plants) primary consumers (grasshoppers and zooplankton) secondary consumers (frogs and crabs) tertiary consumers (hawks and sea otters)
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Detrivores - define + which trophic level?
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Consumers that obtain their energy and nutrients by eating the bodies of sall dead animals, dead plant matter, and animal wastes, they feed at every trophic level
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Herbivores - which trophic level + define
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Animals that only eat plants (they are primary consumers)
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Carnivores - which trophic level + define
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Secondary consumers that eat primary consumers
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Define: food webs
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Models of the feeding relationships within an ecosystem
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Between 80-90% of the food energy taken in by organisms is used for
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Chemical reactions in the body and eventually is lost to the ecosystem as heat
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