<prompt> Non motile Clostridia is:Clostridium tetanomorphumClostridium histolyticumClostridium septicumClostridium perfringens  <response>: Ans: D Clostridium perfringens Ref: Ananthnarayan R. Paniker CKJ. Textbook of Microbiology. 8th Edition. Hyderabad: Universities Press: 2009. Pg. 249Explanation:Most Clostridia are motile with peritrichate flagella.The motility is slow and has been described as stately.Only Cl perfringens and Cl tetani Type VI are nonmotile. 