Question

Amphitrichous bacteria contain flagella like this:

• A. Two flagella at each end
• B. Many flagella at each end
• C. Single flagella at each end
• D. Three flagella at three sides

Hint:

"Amphi-" means both sides — amphitrichous bacteria have a single flagellum at each end.

Answer 1

The Correct Option is C

In bacterial classification based on flagellar arrangement:
- Monotrichous: Single flagellum at one end.
- Lophotrichous: A tuft of flagella at one end.
- Amphitrichous: Single flagellum at both poles (one at each end).
- Peritrichous: Flagella all around the cell.
Hence, amphitrichous bacteria have one flagellum at each pole, enabling them to reverse direction quickly and swim efficiently.