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Presence of which of the following elements is required for nitrogen fixation?(a) Phosphorus(b) Carbon(c) Silver(d) OxygenI had been asked this question in a national level competition.My question is taken from Microbes as Biofertilizers topic in portion Microbes in Human Welfare of Biology – Class 12

Answer»

Right choice is (a) Phosphorus

Easy explanation: Presence of Phosphorous is essential for nitrogen FIXATION. Plants having symbiotic BACTERIA have HIGHER protein content. No EXTERNAL nitrogen fertilizer is required.



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