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  9. Q13

UPPSC PCS 2017 · Question 13 of 149

Which one of the following is not correctly matched? Nitrogen fixing agent Crop

Geography

  1. ABlue green algae Paddy
  2. BRhizobium Leguminisarum Pea
  3. CAzotobacter Wheat
  4. DAzolla Maize General Studies, PAPER-I : 2017 151Correct

Answer: D. Azolla Maize General Studies, PAPER-I : 2017 151

Explanation

Azolla is not used as a nitrogen fixing agent in maize crop. The conversion of atmospheric nitrogen into nitrate so that it can be used by plants is called nitrogen fixation.

Source: edurev.in UPPSC Prelims 2017 GS Paper I with Answer Key and Solutions

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