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Human Health and Disease

Long Answer Type

91. Name the pathogen that causes amoebiasis in human. Give the symptoms and modes of transmission.

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Short Answer Type

92.

Answer the following questions:
(i) How and at what stage does Plasmodium enter into a human body?
(ii) Why does the victim show symptoms of high fever?

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Long Answer Type

93. Name the type of immunity that is present at the time of birth in humans. Explain any two ways by which it is accomplished.

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94. Why is using tobacco in any form injurious to the health ? Explain.

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95.

Sketch life cycle of Plasmodium in Humans.

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96. Discuss measures which would be useful for prevention and control of alcohol and drug abuse among adolescent.

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Short Answer Type

97. What is autoimmunity ? Name one auto-immune disease.

Autoimmunity is the condition when the immune system turns against self. This means that the immune system starts attacking self cells and harms the body.

Example. Rheumatoid artritis in which the immune system destroys the cells of the joints and thus harms the body.

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