Question

Peritrichous bacteria have flagella

• A. At one end
• B. Two poles
• C. All over
• D. No where.

Answer 1

The correct option is C All over

Depending on the presence or absence of flagella, bacteria are grouped into flagellate and non-flagellate types. The various forms of flagellation are as follows:

1. Atrichous: Flagella absent
2. Monotrichous: A single flagellum occurs at or near one end of bacterium.
3. Amphitrichous: A flagellum at each of the two ends.
4. Cephalotrichous: A group or tuft of flagella is found at one end.
5. Lophotrichous: A tuft or group of flagella at each of the two ends or poles.
6. Peritrichous: A number of flagella are distributed all over the surface.

Hence the correct option is C.