Discussion
True about clostridium tetani:
Answer: B
Correct answer: Drum stick appearance
C. tetani is a Gram-positive obligate anaerobe carrying a terminal spherical spore that swells the rod into the drumstick shape. Two of the options are true of it - it is Gram positive, and it shows the drumstick - but the drumstick is the distinguishing morphological feature asked for here, the Gram reaction being shared with the whole genus. It certainly does not grow aerobically, and it is not Gram negative.
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