Solution:
Option (d) is the answer.
Nitrogen fixation is aided by Anabaena, Nostoc, and Azotobacter. Pseudomonas, on the other hand, execute denitrification, which is the conversion of nitrates to nitrogen gas.
Which one of the following is not a nitrogen-fixing organism?
a. Anabaena
b. Nostoc
c. Azotobacter
d. Pseudomonas
a. Anabaena
b. Nostoc
c. Azotobacter
d. Pseudomonas
Which one of the following is not a nitrogen-fixing organism?
a. Anabaena
b. Nostoc
c. Azotobacter
d. Pseudomonas
a. Anabaena
b. Nostoc
c. Azotobacter
d. Pseudomonas