STD 12 - 8. microbes in human welfare — NEET STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 8. microbes in human welfare4 Marks
MCQ
The common nitrogenfixer in paddy fields is
A
Rhizobium
✓
Azospirillum
C
Oscillatoria
D
Frankia.
✓
Answer
Correct option: B.
Azospirillum
b (b) : Azospirillum is an anaerobic nitrogen fixing bacteria which forms loose association with roots of some plants. Inoculation of paddy fields with these bacteria helps in increasing yield and saving of nitrogen fertilizers.
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