GUJCET 2014 Biology Solved Paper

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Question : 21 of 40

Marks: +1, -0

Non-symbiotic nitrogen fixation takes place by :

Nostoc, Azotobacter, Clostridium
Anabena, Nostoc, Rhizobium
Azotobacter, Nitrosomonas, Rhizobium
Anabena, Nitrosomonas, Pseudomonas

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