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Pneumonia in humans is caused by which pair of bacteria?
ASalmonella typhi and Escherichia coli
BMycobacterium leprae and Vibrio cholerae
CEntamoeba histolytica and Wuchereria bancrofti
DStreptococcus pneumoniae and Haemophilus influenzae
Answer & Solution
Correct answer: D. Streptococcus pneumoniae and Haemophilus influenzae
1. Pneumonia is an infection of the alveoli of the lungs.
2. Two bacteria are responsible: Streptococcus pneumoniae and Haemophilus influenzae.
3. Entamoeba and Wuchereria are not bacteria at all, they are a protozoan and a helminth.
4. Salmonella typhi causes typhoid, a different disease entirely.
_Source: NCERT Class 12 Biology Ch7 'Human Health and Disease', section 7.1_
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