With regard to the Biological Nitrogen Fixation by Rhizobium in
association with soybean, which one of the following statement/
statements do not hold.
a. Nitrogenase may require oxygen for its functioning.
b. Nitrogenase is MO- Fe protein
c. Leg-hemoglobin is a pink coloured pigment.
d. Nitrogenase helps to convert N2 gas into two molecules of ammonia.
Option (a) Nitrogenase may require oxygen for its functioning is the answer.