Energy Flow in Ecosystems Quiz
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Questions and Answers

What is the primary function of biogeochemical cycles in an ecosystem?

  • To maintain the balance of abiotic factors
  • To control the population of decomposers
  • To provide energy to consumers
  • To govern the circulation of essential elements (correct)

    • In the carbon cycle, what are the primary processes involved in the movement of carbon?

  • Fermentation, transpiration, and evaporation
  • Erosion, condensation, and precipitation
  • Denitrification, combustion, and sedimentation
  • Photosynthesis, respiration, and decomposition (correct)

    • Which of the following is a key role of bacteria in biogeochemical cycles?

  • Producing oxygen for plants
  • Serving as primary decomposers in aquatic ecosystems
  • Fixing nitrogen for use by organisms (correct)
  • Breaking down carbon dioxide in the atmosphere

    • How do human activities impact biogeochemical cycles?

    <p>By disrupting natural cycles and causing environmental issues</p> Signup and view all the answers

    What does an ecological niche encompass in ecology?

    <p>The function and environmental conditions of a species within its habitat</p> Signup and view all the answers

    What is the main difference between producers and consumers in an ecosystem?

    <p>Producers can generate their own food through photosynthesis, while consumers cannot.</p> Signup and view all the answers

    What is the significance of the 10 percent law in the energy flow of an ecosystem?

    <p>It states that only about 10% of energy is passed on to the next trophic level, with the rest being lost as heat.</p> Signup and view all the answers

    Why is energy flow in an ecosystem considered not 100% efficient?

    <p>Because some energy is lost as heat and not all absorbed energy is used.</p> Signup and view all the answers

    How does a food web differ from a food chain in an ecosystem?

    <p>A food web is more complex and shows how various food chains intersect, while a food chain is a linear sequence.</p> Signup and view all the answers

    Why do consumers need to obtain energy by consuming other organisms in an ecosystem?

    <p>Consumers cannot generate their own food through photosynthesis like producers.</p> Signup and view all the answers

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