SSC Worksheet for chapter-8 Why Do We Fall Ill class 9

Worksheet For class 9

Questions

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1. A disease widely spread worldwide is known as:
   1. Endemic
   2. Epidemic
   3. Pandemic
   4. Sporadic
2. Use of disposable syringes for injecting medicines, etc. is specially advised to prevent:
   1. Poliomyelitis
   2. Mumps
   3. Rabies
   4. AIDS
3. State whether the following statements are true (T) or false (F):
   1. AIDS is caused by a bacterium.
   2. Mumps is a disease of the salivary glands.
   3. Salk vaccine is used against smallpox.
   4. Louis Pasteur discovered a cure for malaria.
4. Name the following:
   1. An organ usually affected by tuberculosis.
   2. A disease that weakens body’s defense system against infections.
   3. The disease in which the eyes, the skin and the urine turn yellow.
5. Define the terms:
   1. Infection
   2. Pathogen
6. State any two conditions essential for good health.
7. Differentiate between communicable and non-communicable diseases.
8. Why are we normally advised to take bland and nourishing food when we are sick?
9. What is immunization?
10. Under which of the following conditions are you most likely to fall sick?
    1. when you are taking examinations.
    2. when you have travelled by bus and train for two days.
    3. when your friend is suffering from measles. Why?