Basic Ecology Concepts - Levels of Organization
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Questions and Answers

What is the primary source of energy for ecosystems?

  • Soil
  • Sun (correct)
  • Plants
  • Animals
  • Which organisms are considered producers in an ecosystem?

  • Bacteria (correct)
  • Protists
  • Fungi
  • Animals
  • How do consumers obtain energy in an ecosystem?

  • Eating other organisms (correct)
  • Producing their own food
  • Photosynthesis
  • Absorbing energy from the soil
  • What describes the sequence of eating and being eaten in an ecosystem?

    <p>Food chain</p> Signup and view all the answers

    What is the process by which producers trap solar energy and convert it into compounds needed by other organisms?

    <p>Photosynthesis</p> Signup and view all the answers

    What is the main difference between the grazing food chain and the parasitic food chain?

    <p>The grazing food chain involves autotrophs and herbivores, while the parasitic food chain involves decomposers and detritivores.</p> Signup and view all the answers

    What is the function of a detrital food chain in an ecosystem?

    <p>To break down dead organic matter into simpler compounds for detritivores.</p> Signup and view all the answers

    How does a pyramid of numbers in an ecosystem typically look like?

    <p>The number of organisms decreases as you move from producers to consumers in successive levels.</p> Signup and view all the answers

    What does the Pyramid of Biomass of Organisms represent?

    <p>It represents the total mass of organisms within each trophic level of the food chain.</p> Signup and view all the answers

    Which law of thermodynamics states that energy is transformed from one form to another but is never created nor destroyed?

    <p>First Law of Thermodynamics</p> Signup and view all the answers

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