UPPSC PCS 2016 · Question 86 of 145
Science
Nitrogen is never taken up by plants directly but is taken up in the form of nitrates or nitrites. Nitrogenissovitalbecauseitisamajorcomponent of chlorophyll, the compound by which plants use sunlight energy to produce sugars.
Source: edurev.in UPPSC Prelims 2016 GS Paper I with Answer Key and Solutions; answers per official UPPSC key (Booklet C)
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