AIPMT PRELIMS2012Botany-Microbes in Human Welfare
AIPMT PRELIMS 2012 Botany Nitrogen Fixation MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A nitrogen-fixing microbe associated with Azolla in rice fields is
A
Tolypothrix
B
Spirulina
C
Anabaena
D
Frankia
Correct Answer
Option C
Detailed Explanation
Anabaena is a cyanobacterium that forms a symbiotic relationship with Azolla, fixing nitrogen in rice fields.
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