CBSE 2023 · Region 3 · Set 2 · Q7 · 1 mark
Which one of the following fixes the atmospheric nitrogen but is not an autotroph ?
Official answer
From CBSE’s own marking scheme for this paper.
(B)
Rhizobium
Microbes in Human WelfareMicrobes as BiofertilisersRemembermcqmedium
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CBSE Class 12 Biology past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.