Question

Nitrates $\stackrel{x}{\to }$ Free nitrogen gas Identify the organism ‘X’ and the process given above which occurs in nitrogen cycle and select the correct option.

• A. $\begin{array}{cc}\text{Process}& \text{x}\\ \text{Nitrification}& \text{Rhizobium}\end{array}$
• B. $\begin{array}{cc}\text{Process}& \text{x}\\ \text{Dentrification}& \text{Pseudomonas}\end{array}$
• C. $\begin{array}{cc}\text{Process}& \text{x}\\ \text{Ammonification}& \text{Azotobacter}\end{array}$
• D. $\begin{array}{cc}\text{Process}& \text{x}\\ \text{Nitrification}& \text{Pseudomonas}\end{array}$

Answer 1

The correct option is B $\begin{array}{cc}\text{Process}& \text{x}\\ \text{Dentrification}& \text{Pseudomonas}\end{array}$

‘X’ in the given reaction represents denitrifying bacteria like Pseudomonas denitrificans that convert nitrates into atmospheric nitrogen. This process is known as denitrification.