Railway Recruitment Board General Awareness — Question 1631
Question
Which of the following is NOT a function of the human kidney?
- Filtration of blood
- Regulation of water balance
- Production of antibodies
- Excretion of urea
Correct answer
C — Production of antibodies
Explanation (English)
Antibodies are produced by plasma (immune) cells, not the kidney; the kidney filters blood and excretes waste.
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