Role of Microorganisms in Nitrogen Biogeochemical Cycle Quiz
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Questions and Answers

Which bacteria are involved in converting ammonia into nitrates in the nitrogen cycle?

  • Nitrogen-fixing bacteria
  • Denitrifying bacteria
  • Nitrosifying bacteria
  • Nitrobacteria (correct)

    • What is the role of nitrogen-fixing bacteria in the nitrogen cycle?

  • Converting ammonia into atmospheric nitrogen
  • Converting atmospheric nitrogen into ammonia (correct)
  • Converting nitrates into atmospheric nitrogen
  • Converting atmospheric ammonia into nitrogen gas

    • In which environments do denitrifying bacteria carry out denitrification?

  • Dry desert areas
  • Waterlogged soils or sediments (correct)
  • Oxygen-rich environments
  • Atmosphere with high oxygen levels

    • What is the final product when denitrifying bacteria convert nitrates back into atmospheric nitrogen?

    <p>Nitrogen gas</p> Signup and view all the answers

    Which process involves the conversion of ammonia into nitrites and nitrates?

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

    Why are nitrates important in the nitrogen cycle?

    <p>They are the primary source of nitrogen for plants</p> Signup and view all the answers

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