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NOTES ON WHY DO WE FALL ILL
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21. If you live in an overcrowded and poorly ventilated house, it is possible that you may suffer from which of the following diseases?
(a) Cancer
(b) AIDS
(c) Air borne diseases.
(d) Cholera
Ans. C
22. Which disease is not transmitted by mosquitoes?
(a) Dengue
(b) Malaria
(c) Brain fever or encephalitis
(d) Pneumonia
Ans. D
23. Which one of the following is not important for individual health?
(a) Living in clean space
(b) Good economic condition
(c) Social equality and harmony
(d) Living in a large and well furnished house
Ans. D
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24. Choose the wrong statement:
(a) High blood pressure is caused by excessive weight and lack of exercise
(b) Cancers can be caused by genetic abnormalities
(c) Peptic ulcers are caused by eating acidic food
(d) Acne is not caused by Staphylococci
Ans. C
25. We should not allow mosquitoes to breed in our surroundings because they:
(a) Multiply very fast and cause pollution
(b) Are vectors for many diseases
(c) Bite and cause skin diseases
(d) Are not important insects
Ans. B
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26. You are aware of Polio Eradication Programme in your city. Children are vaccinated because:
(a) Vaccination kills the polio causing microorganisms
(b) It prevents the entry of polio causing organism
(c) It creates immunity in the body
(d) all of the above
Ans. C
27. Viruses, which cause hepatitis, are transmitted through:
(a) Air
(b) Water
(c) Food
(d) Personal contact
Ans. B
28. Vectors can be defined as:
(a) Animals carry infecting agents from sick person to another healthy
(b) Microorganisms which cause many diseases
(c) Infected person
(d) Diseased plants
Ans. A
29. Name any two groups of microorganisms from which antibiotics could be extracted.
Ans. Bacteria and fungi.
30. Name any three disease transmitted through vectors
Ans. (a) Typhoid
(b) Malaria
(c) Kala-azar
ALSO VISIT : WORD AND ENERGY CLASS 9 MCQ
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