Ecology: Chapter 2, Section 1 Energy Flow in Ecosystem

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lcayward
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230568
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Ecology: Chapter 2, Section 1 Energy Flow in Ecosystem
Updated:
2013-08-21 10:24:48
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Ecology Chapter Section Energy Flow Ecosystem
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vocab
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  1. EACH OF THE ORGANISMS IN AN ECOSYSTEM FILLS ONE OF 3 ENERY ROLES. THE 3 ENERGY ROLES ARE __________, _____________, and ____________
    • 1. Producer
    • 2. Consumer
    • 3. Decomposer
    • (Peter can dance)
  2. PRODUCER
    An organism that can make its own food

    Example: Oak Tree
  3. CONSUMER
    An organism that obtains energy by feeding on other organisms

    Example: Bird, fox, owl
  4. HERBIVORE
    Consumers that eat only plants

    Example: Rabbit, grasshopper
  5. CARNIVORE
    Consumers that eat only animals

    Example: Lion, spider
  6. OMNIVORE
    Consumers that eat both plants and animals

    Example: Humans, crows, bears
  7. SCAVENGER
    A carnivore that feeds on the bodies of dead organisms

    Example: Catfish, vultures
  8. DECOMPOSERS
    Break down wastes and dead organisms and return the raw materials to the ecosystem

    Example: Mushrooms, bacteria
  9. WHAT ARE TWO WAYS IN WHICH MOVEMENT OF ENERGY THROUGH AN ECOSYSTEM CAN BE SHOWN?
    1. Food Chain

    2. Food Web

    (Frank can find water)
  10. FOOD CHAIN
    Series of events in which one organism eats another and obtains energy

    Example: Grass---Mouse---Snake---Fox
  11. FOOD WEB
    Consists of many overlapping food chains in an ecosystem

    • Example: Grass---Grasshopper---Shrew---Fox
    • Combined with the food chain
  12. ENERGY PYRAMID
    A diagram that shows the amount of energy that moves from one feeding level to another food web
  13. WHERE IS THE MOST ENERGY AVAILABLE IN THE ENERGY PYRAMID?
    Producer Level
  14. AS YOU MOVE UP IN THE ENERGY PYRAMID, EACH LEVEL HAS _____ ENERGY AVAILABLE THAN THE LEVEL BELOW
    Less
  15. HOW DOES AN ENERGY PYRAMID GET ITS NAME?
    From the shape of the diagram--- wider at the base, narrower at the top
  16. IN GENERAL, ONLY ABOUT ___% OF THE ENERGY AT ONE LEVEL OF A FOOD WEB IS TRANSFERRED TO THE NEXT HIGHEST LEVEL
    10%
  17. WHY IS A FOOD WEB A MORE REALISTIC WAY OF PORTRAYING AN ECOSYSTEM THAN A FOOD CHAIN?
    The amount of energy available on one level of the energy pyramid is 10 times greater than that available at the next level up
  18. WHY ARE THERE USUALLY FEW ORGANISMS AT THE TOP OF THE ENERGY PYRAMID?
    Because so much energy is lost from one level to the next level up, the energy available at the top level can support few organisms

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