Question

Pathogen can be defined as ________________ .

• A. A micro-organism that lives with another organism
• B. A micro-organism that can cause disease
• C. A micro-organism that lives and feeds on dead material
• D. A micro-organism that cannot cause disease

Answer 1

The correct option is B

A micro-organism that can cause disease

Pathogens are disease causing microorganisms found commonly in sewage, hospital waste, run-off water from farms, and in water used for swimming. Most pathogens are parasites (live off the host) and the diseases they cause are an indirect result of their obtaining food from, or shelter in, the host.