Page 191 - Primary Five Science

Types of Bacteria

Bacteria are grouped according to their shapes

There are four types of bacteria namely:

1. The Spherical bacteria

These cause boils, sore throat,

pneumonia etc.

Examples: Staphylococcus

cause boils, Streptococcus
causes sore throat, diplococus

cause pneumonia

2. Spirilla and spirochaete

The spirilla bacteria do not

move while the spirochaette

move. Example triponema

cause syphilis

3. Rod shaped or cylindrical

bacteria

These are called bacilli

Some of these cause anthrax,

typhoid and food poisoning

Examples: bacillus anthracic

cause anthrax, salmonella

typhi cause typhoid fever, and

mycobacterium causes tuber-

culosis.