This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
All of the following Salmonellae are motile except? 
Select and explain. 
A. S. typhi, B. S. enteridis, C. S. gallinarum pullorum, D. S. chester
C: S. gallinarum pullorum
Answer: C: S. gallinarum pullorum 
Explanation: Ans. is 'c' i.e., S. gallinarum pullorum * All salmonellae are motile with peritrichate flagella except S. gallinarum pullorum, which is non-motile.