Decomposition by Bacteria and Fungi in Organic Matter
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Questions and Answers

Which type of microorganism dominates on larger detrital particles?

  • Algae
  • Protozoa
  • Fungi (correct)
  • Bacteria

What is a key advantage of bacterial morphology compared to fungi for nutrient acquisition?

  • Efficient in breaking down wood
  • Filamentous hyphae structure
  • Efficient in nutrient acquisition (correct)
  • Ability to penetrate plant cell walls

What does a lower Net Growth Efficiency (NGE) of microorganisms indicate?

  • Efficient assimilation of nutrients
  • High nutrient retention in microbial biomass
  • Transient nutrient retention in microbial biomass
  • Loss of detrital carbon as CO2 (correct)

Which macroinvertebrates play a crucial role in fragmenting large litter particles?

<p>Earthworms (D)</p> Signup and view all the answers

What is the primary role of microbes in the decomposition of plant organic matter (POM)?

<p>To release extracellular enzymes that enhance the digestibility of POM (B)</p> Signup and view all the answers

What potential negative impact of microbial activity on detrital resources is mentioned in the text?

<p>Microbes can deplete detrital resources through respiration (A)</p> Signup and view all the answers

How can microbial metabolism influence the availability of organic matter to consumers?

<p>It can either increase or decrease the availability, depending on the pathways of mass loss (C)</p> Signup and view all the answers

Which of the following factors is NOT mentioned in the text as influencing the availability of detrital organic matter to consumers?

<p>The competition between microbes and macroinvertebrates for food resources (B)</p> Signup and view all the answers

Based on the text, which of the following statements is TRUE regarding the broader implications of microbial activity in POM decay?

<p>Microbial activity influences ecosystem functioning and food web dynamics through its effects on POM decay (A)</p> Signup and view all the answers

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