Which of the following is a free living aerobic non-photosynthetic nitrogen-fixer?

Rhizobium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Azotobacter

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Azospirillum

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Nostoc

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Azotobacter
Azotobacter is the ability of the bacteria to "fix" atmospheric nitrogen, by the conversion of this elemental form to ammonia. Plants are able to utilize the ammonia as a nutrient. They are not attracted to plants as nodule.
So, the correct option is 'Azotobacter'.

Suggest Corrections