Question:
The reaction carried out by N2 fixing microbes include
a. 2NH3 + 3O2 2NO2– + 2H+ + 2H2O (i)
b. 2NO2- + O2 2NO3-(ii)
Which of the following statements about these equations is not true
a. step (i) is carried out by Nitrosomonas or Nitrococcus
b. step (ii) is carried out by Nitrobacter
c. both steps (i) and (ii) can be called nitrification
d. bacteria carrying out these steps are usually photoautotrophs
Solution:
Option (d) bacteria carrying out these steps are usually photoautotrophs is the answer.