Answer:
The three forms of bacteria are bacilli, coccus, and spirals.
Step-by-step explanation:
Bacilli are characterized by being rod-shaped bacteria. The most common are those that cause tuberculosis, tetanus, etc. These types of bacteria inhabit different environments and can only be seen using a microscope. While coccus are bacteria with a spherical shape. And finally, the spirals are bar-shaped, spiral, or rigid.