Typhoid fever is caused by the bacterium:
A{'text': 'Vibrio cholerae'}
B{'text': 'Plasmodium vivax'}
C{'text': 'Salmonella typhi'}
D{'text': 'Bordetella pertussis'}
Answer & Solution
Correct answer: C. {'text': 'Salmonella typhi'}
1. Typhoid is a bacterial infection of the intestinal tract.
2. The causative agent is **Salmonella typhi**, spread via contaminated food and water.
3. Vibrio cholerae causes cholera, not typhoid.
4. Plasmodium is a protozoan parasite; Bordetella pertussis causes whooping cough.
5. Hence the cause of typhoid is **Salmonella typhi**.
_Source: Selina Concise ICSE Class 8 Biology Ch 8 "Diseases and First Aid", Pathogens table_
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