Nitrogen-fixing bacteria and nitrifying bacteria convert atmospheric nitrogen into different compounds of nitrogen such as:
(a) ammonium ion, (b) ammonia, (c) nitrate ion, and (d) nitrite ion. Which of the following is the correct sequence of formation of the nitrogen compounds?

Question

Quizplus · Accepted Answer

Nitrogen-fixing bacteria convert atmospheric nitrogen into ammonia (b). Ammonia is then converted into ammonium ions (a). Nitrifying bacteria convert ammonium ions into nitrite ions (d), and then into nitrate ions (c).

Nitrogen-Fixing Bacteria and Nitrifying Bacteria Convert Atmospheric Nitrogen into Different