Q66 of 104 Page 41

What is meant by communicable diseases? Name any two communicable diseases.

Microbial diseases that can spread from an infected person to a healthy person through air, water, food or physical contact are called communicable diseases. Cholera and tuberculosis are examples of communicable diseases.


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64

Name any two animal diseases and two plant diseases caused by micro-organisms.

 65

State the causative micro-organisms and modes of transmission of the following human diseases :

(i) Tuberculosis


(ii) Measles


(iii) Chickenpox


(iv) Polio


(v) Cholera


(vi) Typhoid


(vii) Hepatitis B


(viii) Malaria


(ix) Dengue

 66

What are the various ways in which communicable diseases can occur and spread?

 67

Name any five human diseases caused by micro-organisms. Also name the causative micro-organisms and mode of transmission for each of these diseases.