Question

Give the classification of bacteria based on the arrangement and number of flagella.

Answer 1

Bacteria:

1. Bacteria are microscopic single-celled organisms without a definite nucleus.
2. They come in a variety of shapes, including spheres, rods, and spirals.
3. They can be found in almost every environment, including soil, water, organic debris, and animal bodies.

Classification of Bacteria:

1. On the basis of arrangement and the number of flagella, the bacteria can be classified into four groups.
2. These are monotrichous , amphitrichous, lophotrichous, and peritrichous.

A. Monotrichous:

1. There is only one flagellum in monotrichous.
2. For example, Vibrio cholerae

B. Amphitrichous:

1. There is only a single flagellum in amphitrichous bacteria but they are found at both ends.
2. For example, Alcaligenes faecalis

C. Lophotrichous:

1. In lophotrichous, there are several flagella found as a tuft.
2. For example, Helicobacter pylori

D. Peritrichous:

1. In peritrichous, the flagella are distributed all over the cell, but they are not found on the pole.
2. For example, Salmonella enterica