Question

When flagella are distributed all around a bacterial cell, the arrangement is called as

• A. Polar
• B. Random
• C. Peritrichous
• D. Encapsulated

Answer 1

The correct option is C Peritrichous

Flagella is the locomotory structure in bacteria. The number and location of flagella are distinctive for each genus. There are four types of flagellar arrangement.

1. Monotrichous: Single polar flagellum, e.g., Vibrio cholerae.
   
2. Amphitrichous: Single flagellum at both ends, e.g., Alcaligenes faecalis.
3. Lophotrichous: Tuft of flagella at one or both ends, e.g., Spirilla.
4. Peritrichous: Flagella surrounding the cell, e.g., Typhoid bacilli.

Hence the correct option is C.