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
Which of the following is NOT a motile organism: September 2004 
Select and explain. 
A. Shigella, B. Treponema, C. Listeria, D. Pseudomonas
A: Shigella
Answer: A: Shigella 
Explanation: Ans. A i.e. Shigella Shigellae are sho, Gram negative bacilli. They are non-motile, non-capsulated and non-sporing.