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Microbes in Human Welfare — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYMicrobes in Human Welfare1 Mark
MCQ
Which of the following pairs serves as a biofertilizer?
  • A
    Albugo and Lichen
  • B
    Frankia and Nostoc
  • C
    Pseudomonas and E.coli
  • D
    Spirogyra and Mucor
✓

Answer

  1. Frankia and Nostoc

Explanation:

Frankia is nitrogen fixing bacteria. It lives in symbiosis with actinorhizal plants. Bacteria of this genus also form root nodules. Blue-green algae belonging to a general cyanobacteria genus, Nostoc or Anabaena or Tolypothrix or Aulosira, fix atmospheric nitrogen and are used as inoculations for paddy crop grown both under upland and lowland conditions.

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