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Microbes in Human Welfare — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMicrobes in Human Welfare1 Mark
MCQ
Which of the following is a biofertilizer?
  • A
    Funaria
  • B
    Fern
  • C
    Anabaena
  • D
    Escherichia coli
✓

Answer

  1. Anabaena

Explanation:

Blue-green algae like Nostoc, Anabaena fix atmospheric nitrogen and hence enhance soil fertility. Hence, these organisms are used as biofertilizers. Blue-green algae have special thick-walled cells, called as heterocysts, which carry on the process of fixation of atmospheric nitrogen.

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