the function of leghaemoglobin during biological nitrogen fixation in root nodules of legumes is to

1. convert atmosppheric N₂ to NH₃
2. convert ammonia to nitrate
3. transport oxygen for activity of nitrogenase
4. protect nitrogenase from oxygen

the function of leghaemoglobin during biological nitrogen fixation in root nodules of legumes is to protect nitrogenase from oxygen.
Leghemoglobinis a nitrogen or oxygen carrier, because naturally occurring oxygen and nitrogen interact similarly with this protein; and ahemoproteinfound in thenitrogen-fixingroot nodules ofleguminousplants.