Decomposers: Micro vs Macro
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Questions and Answers

What is an example of a micro-decomposer?

  • Earthworm
  • Slug
  • Fungi (correct)
  • Mushroom
  • Which of the following statements is true regarding macro-decomposers?

  • They primarily consist of bacteria.
  • They are larger but less numerous. (correct)
  • They play a negligible role in decomposition.
  • They are microscopic organisms.
  • Which organism category does not belong to micro-decomposers?

  • Fungi
  • Bacteria
  • Insects (correct)
  • Protozoans
  • In terms of size, how do micro-decomposers compare to macro-decomposers?

    <p>Micro-decomposers are smaller than macro-decomposers.</p> Signup and view all the answers

    What is the term used to describe the cycling of nutrients in the biosphere?

    <p>Biogeochemical cycle</p> Signup and view all the answers

    Which of the following best describes the classification of decomposers?

    <p>Both micro-decomposers and macro-decomposers play a key role.</p> Signup and view all the answers

    What geometric shape is always formed in the context of energy transfer in ecosystems?

    <p>Upright pyramid</p> Signup and view all the answers

    Which of the following best describes the relationship between nutrients and biogeochemical cycles?

    <p>Nutrients are recycled through various biological and geological processes.</p> Signup and view all the answers

    Which concept is primarily associated with the movement of energy and nutrients in ecosystems?

    <p>Biogeochemical cycles</p> Signup and view all the answers

    What does the term 'upright pyramid' suggest in the context of ecological energy transfer?

    <p>Energy is lost at higher trophic levels.</p> Signup and view all the answers

    Which process uses carbon dioxide from the atmosphere or water?

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

    What is a key compound involved in the carbon cycle found dissolved in oceans?

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

    Which of the following is NOT a process included in the carbon cycle?

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

    Why is carbon dioxide important in photosynthesis?

    <p>It is used to produce glucose.</p> Signup and view all the answers

    Where is a significant amount of carbon dioxide found aside from the atmosphere?

    <p>In oceans</p> Signup and view all the answers

    What happens to the phosphates that move with surface runoff?

    <p>They reach the oceans and are lost into deep sediments.</p> Signup and view all the answers

    What primarily causes phosphorus to be taken out of its normal cycle?

    <p>Loss of phosphorus into the oceans.</p> Signup and view all the answers

    Why is the supply of phosphorus considered limited?

    <p>Phosphate rocks are being rapidly depleted.</p> Signup and view all the answers

    What is a consequence of the over-exploitation of phosphorus?

    <p>A disruption in the natural phosphorus cycle.</p> Signup and view all the answers

    Where does a significant amount of phosphate end up due to surface runoff?

    <p>In deep ocean sediments.</p> Signup and view all the answers

    What is the primary source of carbon found in living organisms?

    <p>Atmospheric carbon dioxide</p> Signup and view all the answers

    Which statement best describes the solubility of carbon dioxide?

    <p>Carbon dioxide is highly soluble in water.</p> Signup and view all the answers

    Which of the following statements about carbon dioxide is incorrect?

    <p>It exists solely in the atmosphere.</p> Signup and view all the answers

    In the context of the carbon cycle, what is the significance of fossil fuels?

    <p>They store carbon derived from ancient photosynthesis.</p> Signup and view all the answers

    Which process is primarily responsible for releasing carbon from fossil fuels back into the atmosphere?

    <p>Burning of the fuels</p> Signup and view all the answers

    Study Notes

    Decomposers

    • Decomposers are classified into two types: micro-decomposers and macro-decomposers.
    • Micro-decomposers include microscopic organisms such as bacteria, fungi, and protozoans.
    • Macro-decomposers are larger organisms but are fewer in number.
    • The structure of decomposer populations resembles an upright pyramid, indicating the larger biomass of micro-decomposers compared to macro-decomposers.

    Biogeochemical Cycles

    • Biogeochemical cycles refer to the cycling of nutrients within the biosphere.
    • The carbon cycle is a key component, where atmospheric carbon dioxide serves as the primary carbon source for living organisms and fossil fuels.
    • Carbon dioxide is highly soluble in water; oceans hold significant amounts of dissolved carbon dioxide and bicarbonates.

    Carbon Cycle Processes

    • Photosynthesis is a crucial process where terrestrial and aquatic plants use carbon dioxide to produce organic compounds.
    • A considerable amount of phosphates is transported with surface runoff into oceans, leading to loss in deep sediments.
    • Phosphate rocks on Earth contain limited phosphorus supply, leading to over-exploitation and further loss from the normal phosphorus cycle.

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    Description

    Explore the fascinating world of decomposers with this quiz. Learn about the differences between micro-decomposers like bacteria and fungi, and macro-decomposers that are larger in size but fewer in number. Test your understanding of their roles in the ecosystem.

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