Q4 of 328 Page 300

Suggest any two ways to prevent being infected by protozoa.

There are two ways to prevent being infected by Protozoa. They are:

We should avoid contaminated food and water.


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3

Discuss with the help of suitable examples three ways in which microorganisms can find entry into human body.

 4

Which of the following disease are protozoan in origin?

Dengue, Malaria, Kala-azar and HIV-AIDS

 5

Why taking an antibiotic is not effective in the common cold?

 5

Name two diseases against which infants below one year are vaccinated.