Question : Which one of the following is not an excretory organ?
Option 1: Kidneys
Option 2: Liver
Option 3: Lungs
Option 4: Spleen
Correct Answer: Spleen
Solution : The correct option is Spleen.
The spleen does not function as an excretory organ. While the kidney, lungs and liver play roles in excretion or waste disposal, the spleen is largely engaged in immune system processes, blood filtering and red blood cell storage.
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