Question
Identify the shape of the bacteria marked by a red arrow in the picture below?
A. Bacillus.
B. Vibrio.
C. Spirillum.
D. Spirochaete.
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Correct Answer » C Explanation |
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Ans:C. Spirillum.
The shape of the bacteria as marked by a red arrow in the picture above is Spirillum.
- Spirillum is a genus of Gram-negative bacteria within family Spirillaceae.
- Members of Spirillum are large, elongate, spiral shaped, rigid cells.
- Some have tufts of flagella at both poles.
- They are microaerophilic and usually found in stagnant freshwater rich in organic matter.
- The bacterium provisionally named Spirillum minus is associated with rat-bite fever.