Microbiology Bacteria c6923055 Clostridium tetani is: A Gram positive bacilli B Gram negative bacilli C Gram positive cocci D Gram negative cocci High-Yield Explanation Ans. is 'a' i.e., Gram positive bacilli(Ref: Ananthanarayan, 9th/e, p. 259 and 8th/e, p. 256)*All Clostridia are anaerobic, spore forming, gram positive bacilli.