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Which microbe is capable of fixing nitrogen in non-leguminous plants?

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in Biology – Class 11 by (272k points)
Which microbe is capable of fixing nitrogen in non-leguminous plants?

(a) Bacillus

(b) Beijernickia

(c) Anabaena

(d) Frankia

I got this question in class test.

This is a very interesting question from Mineral Nutrition topic in chapter Mineral Nutrition of Biology – Class 11

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Correct choice is (d) Frankia

The explanation: Frankia is a microbe that is capable of fixing nitrogen in non-leguminous plants such as Alnus. It also produces nodules in the roots of plant. It can freely live in soil but fixes nitrogen as a symbiont. Bacillus is a free living anaerobic nitrogen fixer. Beijernickia is an aerobic nitrogen fixer. Anabaena is a microbe among the cyanobacteria that is capable of nitrogen fixation.

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