This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
Which of the following has subterminal spores? 
Select and explain. 
A. C. bifermentans, B. C perfringens, C. C tetani, D. C teium
B: C perfringens
Answer: B: C perfringens 
Explanation: Cl. perfringens has subterminal spores (club shaped) Location of spores: Most of the clostridia bear a sub-terminal spores except: C. tetani Spherical and terminal spore (drum stick appearance) C. teium Oval and terminal spore (tennis racket appearance) Most clostridia Subterminal spore (club shaped) C. bifermentans Central and oval spore (spindle shaped)