Biological Systems in Biofertilizer Production

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Questions and Answers

Which of the following is NOT one of the biological systems used in the production of biofertilizers?

  • Solvent for mineral phosphates
  • Oxidizer for organic matter (correct)
  • Silicate analyzer and liberator for potassium and silicon
  • Stabilizer for atmospheric nitrogen

Which biological system is responsible for mineralizing mineral phosphates and organophosphates?

  • Silicate analyzer and liberator for potassium and silicon
  • Stabilizer for atmospheric nitrogen
  • Oxidizer for organic matter
  • Solvent for mineral phosphates (correct)

What is the role of the system that acts as a silicate analyzer and liberator for potassium and silicon?

  • To stabilize atmospheric nitrogen
  • To liberate potassium and silicon (correct)
  • To oxidize organic matter
  • To mineralize mineral phosphates

Which of the following is a function of the biological system that stabilizes atmospheric nitrogen?

<p>Stabilization of atmospheric nitrogen (C)</p> Signup and view all the answers

What is the main function of the biological system acting as a solvent for mineral phosphates and organophosphates?

<p>Mineralization of mineral phosphates and organophosphates (D)</p> Signup and view all the answers

Which type of organisms are capable of stabilizing atmospheric nitrogen?

<p>Prokaryotes such as bacteria, actinomycetes, and blue-green bacteria (C)</p> Signup and view all the answers

What is the most common type of Azotobacter?

<p>Az. Chrococcum (D)</p> Signup and view all the answers

What is the optimum temperature for Azotobacter?

<p>30-35°C (D)</p> Signup and view all the answers

Which of the following organisms secrete nitrogenous substances that help plants grow and fix the equivalent of 20-40 kg/ha annually?

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

What does Azotobacter not have the ability to do?

<p>Decompose difficult organic substances (B)</p> Signup and view all the answers

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