MCQ
Which one is a nonsymbiotic nitrogen fixer
  • A
    Rhizobium
  • B
    Oscillatoria
  • Nostoc
  • D
    Lactobacillus

Answer

Correct option: C.
Nostoc
c
(c)Nostoc is a free living nitrogen-fixing blue green algae probably with the help of heterocysts. Photosynthesis provides the energy for nitrogen fixation.

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