Answer: Beneficial microbes develop a symbiotic relationship with the host and pathogenic microbes do not and cause disease symptoms in the host.
Explanation:
Microbes or microorganisms can be beneficial or pathogenic.
a. Beneficial microorganisms are microorganisms that play an important role in plant growth,
wellbeing and productivity. Beneficial microorganisms ensure that there is availability of nutrients in plants, they provide hormones that ensure the growth of plants.
b. Pathogenic microorganisms are disease causing organisms. Examples include, Salmonella, Escherichia coli, e.t.c