Notifications
Clear all
0
06/09/2020 11:25 am
Topic starter
Leghaemoglobin helps in
(a) nitrogen fixation
(b) protecting nitrogenase from O2
(c) destroys bacteria
(d) transport of food in plants
1 Answer
0
06/09/2020 11:28 am
(b) protecting nitrogenase from O2
Explanation:
The root nodules of leguminous plants contain a symbiotic nitrogen fixing bacteria Rhizobium. Root nodules are small irregular outgrowth of the roots which are pinkish internally due to presence of a pigment called leghaemoglobin. It is related to blood pigment haemoglobin. The cells of root nodules are tetraploid and contain polyhedral bacteria called bacteroids. Leghaemoglobin is an oxygen scavenger and protects the nitrogen fixing enzyme nitrogenase of bacteroids.