MCQ practice · SSC Biology Board questions · Chapter 8: Excretory System
About how many nephrons are there in each kidney?
Think it through first, then pick an option.
- a 10-12
- b 10-12 hundred
- c 10-12 thousand
- d 10-12 lakh
Answer and explanation
Correct answer: d 10-12 lakh
Each kidney has about 10-12 lakh nephrons.
Why the other options are wrong
- a 10-12: 10-12 nephrons would be far too few; the book counts in lakhs.
- b 10-12 hundred: 10-12 hundred is only a few thousand; the book says 10-12 lakh.
- c 10-12 thousand: 10-12 thousand is much less than the book's figure.
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