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Ecosystem energy flow (part 1)
 

Ecosystem energy flow (part 1)

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    Ecosystem energy flow (part 1) Ecosystem energy flow (part 1) Presentation Transcript

    • Biology I: Energy Flow Through an Ecosystem (part 1) Producers, Consumers, Decomposers copyright cmassengale
      • Agenda – Mon., Oct. 3, 2011
      • Warm-Up
      • Lesson
      • Classifying Activity (Wrap-Up)
      • Missing Work/Quiz
    • Today’s Objectives
      • I will explore energy flow within an
      • ecosystem.
      • I will define: producer, primary
      • consumer, 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.
    • copyright cmassengale The flow of energy begins with the SUN through a process called Photosynthesis.
      • Photosynthesis
      • Chemical reaction where green plants use water & carbon dioxide to make glucose .
      • ENERGY is stored in glucose
      copyright cmassengale
    • PRODUCERS are organisms that can make their own food by carrying out photosynthesis. copyright cmassengale
    • Examples of producers are: plants, algae, and some bacteria Producers use most of the energy that they make for themselves. copyright cmassengale
    • The energy that is not used by producers can be passed on to organisms that cannot make their own food. copyright cmassengale
    • CONSUMERS are organisms that cannot make their own food. They obtain energy by eating other organisms. copyright cmassengale
    • THREE TYPES OF CONSUMER
      • Primary Consumers
      • Secondary Consumers
      • Tertiary Consumers
      copyright cmassengale
    • Primary Consumers are consumers that eat producers to get energy.
      • Examples include plant-eaters such as grasshoppers .
      copyright cmassengale
    • Secondary Consumers are consumers that feed on primary consumers to get energy.
      • Examples include frogs, cats, and birds.
      copyright cmassengale
    • Tertiary consumers are consumers that feed on secondary consumers to get energy .
      • Examples include snakes, hawks, and people.
      copyright cmassengale
      • Decomposers
      copyright cmassengale Decomposers get energy by breaking down dead organisms. Examples include most fungi and many types of bacteria. They return chemicals to the environment .
    • CLASSIFY THE FOLLOWING PICTURES, DESCRIPTIONS, AND SCENARIOS AS: PRODUCER PRIMARY CONSUMER SECONDARY CONSUMER TERTIARY CONSUMER DECOMPOSER copyright cmassengale
      • Organisms that create their own energy by carrying out photosynthesis
      copyright cmassengale
    • copyright cmassengale
      • Frogs commonly eat grasshoppers.
      • The frogs are __________ consumers.
      copyright cmassengale
      • Organisms that break down dead organisms and return the chemicals to the environment
      copyright cmassengale
    • copyright cmassengale
      • A snake eats a frog that ate several grasshoppers.
      • The snake is a __________ consumer.
      copyright cmassengale
      • An organism that fed on another organism that ate a producer.
      copyright cmassengale
    • copyright cmassengale
      • A hawk eats a snake that ate a frog that ate several grasshoppers.
      • The hawk is a __________ consumer.
      copyright cmassengale
      • Organisms that eat only producers.
      copyright cmassengale