CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

For nitrogen fixation, the pigment useful is

A
Nitrogenase.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Haemoglobin.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Myoglobin.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Leghaemoglobin.
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is C Leghaemoglobin.
Plants cannot consume atmospheric nitrogen directly, because in atmosphere nitrogen occurs in stable diatomic form. The atmospheric nitrogen needs to be converted into plant usable forms like nitrate, nitrite and ammonium ion. This process is called as nitrogen fixation.
Rhizobium is a microaerobic bacteria, which occurs in root nodules of legume plants in symbiotic association. Rhizobium bacteria nodule is pink coloured due to presence of a bacterial pigment called as leghaemoglobin. This pigment binds excess oxygen present in nodules. Free oxygen is harmful for the nitrogenase enzyme of Rhizobium. Rhizobium bacteria reduces atmospheric nitrogen into ammonium ions using reducing power obtained from host plant.

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Metabolism of Nitrogen
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon