Q. Which of the following pairs of bacteria is involved in two step conversion of $NH_{3}$ into nitrate?
A) $Azotobacter$ and $Nitrosomonas$
B) $Nitrosomonas$ and $Nitrobacter$
C) $Azotobacter$and $Achromobacter$
D) $Pseudomonas$ and $Nitrobacter$
Explanation
$Nitrosomonas$converts$NH_{3}$ into nitrite and then, $Nitrobacter$ converts nitrite into nitrate.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.