Which of the following have the ability to fix atmospheric nitrogen ? 1. Azola 2. E. Coli 3. Cyanobacteria 4. Azospirillum Select the correct answer from the codes given below : Codes :

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Q: 31 (IES/2002)
Which of the following have the ability to fix atmospheric nitrogen ?
1. Azola
2. E. Coli
3. Cyanobacteria
4. Azospirillum

Select the correct answer from the codes given below : Codes :

question_subject: 

Science

question_exam: 

IES

stats: 

0,23,18,11,23,3,4

keywords: 

{'atmospheric nitrogen': [1, 0, 1, 0], 'azospirillum': [0, 0, 2, 1], 'cyanobacteria': [1, 0, 1, 2], 'azola': [0, 0, 1, 0], 'ability': [1, 0, 2, 5]}