Tick the incorrect statement about Clostridium tetani.

They are widely distributed in soil and intestine of man and animals.

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They produce swarming growth on moist blood agar under anaerobic conditions.

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They are motile by peritrichous flagella.

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None of the above.

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Solution

The correct option is D None of the above.
Clostridium tetani is a rod-shaped bacterium, which is gram positive. C. tetani is an obligate anaerobe and must rely on fermentation. As an obligate anaerobe, it is not able to tolerate the presence of oxygen. C. tetani causes tetanus. C. tetani move around by the use of rotary flagella. The organization of these flagella is peritrichous, which means that there are flagella randomly assorted around the cell. C. tetani are found commonly in soil, dust, or sediment. They are also found in human and animal intestinal tracts, where they become pathogenic.

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