Bacteria in Terrestrial Environments
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Questions and Answers

What is the purpose of clustering within a sheath in filamentous bacteria?

  • Sporulation and development
  • Antibiotic production
  • Nitrogen fixation
  • Nutrient acquisition and retention (correct)

    • What is the name of the structure found in filamentous bacteria that is responsible for nitrogen fixation?

  • Sheath
  • Biofilm
  • Sporangium
  • Heterocyst (correct)

    • What is the function of heterocysts in filamentous bacteria?

  • Sporulation
  • Nitrogen fixation (correct)
  • Antibiotic production
  • Biofilm formation

    • What is the result of nitrogen fixation in filamentous bacteria?

    <p>Fixed N2 (D)</p> Signup and view all the answers

    What is the significance of clustering within a sheath in filamentous bacteria in terms of nutrient acquisition?

    <p>It increases nutrient availability (B)</p> Signup and view all the answers

    What is a characteristic of bacteria that enables them to find favorable habitats?

    <p>Formation of chains encased in tubes (C)</p> Signup and view all the answers

    What is an example of a bacterium that uses a unique means to obtain nutrients?

    <p>Nostoc punctiforme (B)</p> Signup and view all the answers

    What is the primary role of bacteria associated with plants in terrestrial environments?

    <p>Obtaining nutrients through symbiotic relationships (A)</p> Signup and view all the answers

    What is a benefit of biofilm formation in bacteria?

    <p>Improved nutrient uptake (B)</p> Signup and view all the answers

    Which of the following is an example of a symbiotic relationship between bacteria and plants?

    <p>Bacteria fixing nitrogen for plants (C)</p> Signup and view all the answers

    Which of the following microorganisms is known for its ability to fix nitrogen?

    <p>Azotobacter sp. (A)</p> Signup and view all the answers

    What is the primary function of biofilms in Myxobacter sp.?

    <p>Protection from the environment (A)</p> Signup and view all the answers

    Which of the following is NOT a characteristic of Myxobacter sp.?

    <p>Ability to fix nitrogen (B)</p> Signup and view all the answers

    Which organism is capable of forming a symbiotic relationship with Azotobacter sp.?

    <p>Plants (C)</p> Signup and view all the answers

    Which of the following is a characteristic of Streptomyces sp.?

    <p>Antibiotic production (B)</p> Signup and view all the answers

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