. A plant gets nitrogen through the process of


(a)          nutrition.

(b)          nitrogen fixation.

(c)           photosynthesis.

(d)          photoperiodism.

 

Best Answer

(b) nitrogen fixation

Plants cannot use the free nitrogen in the air. Rhizobium bacterium present in the root nodules of the legumes (pulses) has the ability to convert this free nitrogen into usable form.

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