Question

useful micro organisms and harmful micro organisms​

Answer 1

Answer:

These microbes are called pathogens. They are specially adapted to infect and multiply within a host. Some diseases caused by pathogens are polio, cholera, mumps, rabies, malaria etc. Some microorganisms need a carrier to transmit diseases.

Answer 2

Algae - Useful - Anabaena (biological nitrogen fixation)

- harmful- blue-green algae and red tides (produce toxins)

Protozoa - Useful- Paramecium (kills harmful bacteria)

- harmful- Plasmodium (malaria fever)

Virus - useful - polio, chicken pox (to make vaccines)

- harmful- HIV (causes AIDS)