Which of the following sets of diseases is caused by bacteria?
Answer: (A) A. Answer: (A) Cholera and tetanus Solution: Both cholera and tetanus are bacterial diseases (Vibrio cholerae and Clostridium tetani respectively); NCERT lists dysentery, plague, diphtheria, tetanus etc.
- A.A✓
- B.B
- C.C
- D.D
Correct Answer
(A) A
Solution & Explanation
Answer: (A) Cholera and tetanus Solution: Both cholera and tetanus are bacterial diseases (Vibrio cholerae and Clostridium tetani respectively); NCERT lists dysentery, plague, diphtheria, tetanus etc. among bacterial diseases of man. Why not the others: Smallpox, mumps, herpes and influenza are all viral diseases. Typhoid is bacterial (Salmonella typhi) but is paired with smallpox (viral) in B, and mumps (viral) is paired with tetanus in C, so only A has both members bacterial. NCERT Reference: NCERT Ch7, p.131, lines 15-16: "Dysentery, plague, diphtheria, etc., are some of the other bacterial diseases in man"
