Chapter 1: Life Processes

Q&A -Ask Doubts and Get Answers

Q
Life Processes

Question:

The kidneys in human beings are a part of the system for

(a) nutrition. 

(b) respiration.

(c) excretion.

(d) transportation.

Answer:

The human excretory system consists of:

  • A pair of kidneys
  • A pair of ureters
  • A Urinary bladder

Urine is produced in the kidney and it passes through the ureter and is then stored in the urinary bladder.  It is expelled out of the body from the urethra when needed. CO2 present is the blood is removed out from the body by the lungs. Blood containing nitrogenous waste like urea or uric acid is removed from the kidney. So, the kidney acts as a filter. It filters nitrogenous waste from the blood. 

Therefore, the correct answer is (c) excretion.


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