Why Do We Fall Ill? (Practice Sheet, Class 9)

(1) Find out what provisions are made by your local authority for the supply of clean drinking water?

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(2) Write the differences between chronic and acute disease.

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(3) Write the down the diseases spread by viruses, bacteria and worm.

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(4) Now a days Corona COVID 19 is spread all over the world. Everyone is seeing towards scientists for it vaccine. Can you explain why?

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(5) Why making anti – viral medicines is harder than making anti – bacterial medicines?

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(6) A person is taking antibodies in viral fever. What will be your advice to him?

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(7) Write down the name of the organ which get effected by the diseases given below –

Jaundice, typhoid, malaria, AIDS

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(8) What is inflammation?

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(9) Write the differences between organ specific and tissue specific diseases.

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(10) What are the vector borne diseases and how would you prevent from them?

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Helping Topics

Why do we fall ill?

NCERT solutions, class 9

Microorganisms: friend and foe

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