Q. 1. The kidneys in human beings are a part of the system for
(a) nutrition. (c) excretion.
(b) respiration. (d) transportation.
The kidneys in human beings are a part of the system for excretion. (c) is the correct answer.
Excretion is the process of eliminating toxic wastes from the body. The kidneys are the primary excretory organs in mammals.