ecosystem energy flow (part 1)
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Biology I: Energy Flow Through an Ecosystem (part 1)
Producers, Consumers, Producers, Consumers, DecomposersDecomposers
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Agenda – Mon., Oct. 3, 2011
Warm-UpLessonClassifying Activity (Wrap-Up)Missing Work/Quiz
Today’s ObjectivesI will explore energy flow within anecosystem.
I will define: producer, primaryconsumer, secondary consumer,tertiary consumer, and decomposer.
I will classify producers, consumers,and decomposers.
Warm-Up
Write three goals you hope to accomplish this week in Biology.
Describe three ways you will go about
accomplishing these goals.
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The flow of The flow of energy energy begins begins with the SUN with the SUN through a through a process called process called Photosynthesis.Photosynthesis.
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PhotosynthesisPhotosynthesis•Chemical reaction where Chemical reaction where green green plants plants use use water & carbon dioxidewater & carbon dioxide to to make make glucoseglucose..
•ENERGYENERGY is is stored in glucosestored in glucose
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PRODUCERS are are organisms that organisms that can make their can make their own food own food by by carrying out carrying out photosynthesis.photosynthesis.copyright cmassengale
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Examples of producers Examples of producers are: are: plants, algae, and plants, algae, and some bacteriasome bacteria
Producers use most Producers use most of of the energy that they the energy that they make for make for themselves.themselves.
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The The energy that is energy that is not used by not used by
producersproducers can be can be passed on to passed on to
organisms that organisms that cannot make their cannot make their
own food.own food.copyright cmassengale
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CONSUMERSCONSUMERS are are organisms that organisms that cannot make their cannot make their own food.own food.
They They obtain energy obtain energy by eating other by eating other organisms.organisms.
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THREE TYPES OF CONSUMER
Primary Consumers
Secondary Consumers
Tertiary Consumers
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Primary Consumers Primary Consumers are are consumers that eat consumers that eat producersproducers to get energy.to get energy.
Examples include plant-eaters such as grasshoppers.
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Secondary ConsumersSecondary Consumers are are consumers that feed on consumers that feed on primary consumersprimary consumers to get to get energy.energy.
ExamplesExamples include include frogs, cats, and frogs, cats, and birds.birds.
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Tertiary consumersTertiary consumers are are consumers that feed on consumers that feed on secondary consumers secondary consumers to get to get energyenergy..
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ExamplesExamples include include snakes, hawks, snakes, hawks, and people.and people.
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DecomposersDecomposers
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DecomposersDecomposers get energy by breaking down get energy by breaking down dead organisms.dead organisms.
ExamplesExamples include include most fungi most fungi and and many many types of bacteria.types of bacteria.
They They return chemicals to the environmentreturn chemicals to the environment..
CLASSIFY THE FOLLOWING PICTURES, DESCRIPTIONS, AND SCENARIOS AS:
PRODUCERPRIMARY CONSUMER SECONDARY CONSUMER TERTIARY CONSUMER DECOMPOSER
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Organisms that create their own energy by carrying out photosynthesis
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Frogs commonly eat grasshoppers.
The frogs are __________ consumers.
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Organisms that break down dead organisms and return the chemicals to the environment
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A snake eats a frog that ate several grasshoppers.
The snake is a __________ consumer.
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An organism that fed on another organism that ate a producer.
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A hawk eats a snake that ate a frog that ate several grasshoppers.
The hawk is a __________ consumer.
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Organisms that eat only producers.
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