Excretion System -Multiple Choice Questions Quiz

Question 1: What is the primary organ responsible for excretion in humans?

(a) Liver
(b) Lungs
(c) Kidneys
(d) Skin

Question 2: Which of the following is a waste product of protein metabolism that is excreted by the kidneys?

(a) Glucose
(b) Urea
(c) Oxygen
(d) Carbon dioxide

Question 3: What is the functional unit of the kidney responsible for filtering blood and forming urine?

(a) Nephron
(b) Alveolus
(c) Bronchus
(d) Neuron

Question 4: Which part of the excretory system stores urine before it is eliminated from the body?

(a) Urethra
(b) Bladder
(c) Ureter
(d) Kidney

Question 5: Which organ of the excretion system plays a role in maintaining water and electrolyte balance in the body?

(a) Liver
(b) Lungs
(c) Skin
(d) Kidneys

Question 6: Which of the following is a waste product excreted through the respiratory system?

(a) Urea
(b) Carbon dioxide
(c) Bilirubin
(d) Creatinine

Question 7: What is the tube-like structure that carries urine from each kidney to the bladder?

(a) Urethra
(b) Bladder
(c) Ureter
(d) Nephron

Question 8: Which hormone plays a role in regulating water reabsorption in the kidneys, thereby influencing urine concentration?

(a) Insulin
(b) Thyroxine
(c) Antidiuretic hormone (ADH)
(d) Glucagon

Question 9: Which of the following is a function of the excretory system?

(a) Production of digestive enzymes
(b) Regulation of body temperature
(c) Filtration of blood
(d) Production of red blood cells

Question 10: Which of the following is NOT a waste product excreted by the excretory system?

(a) Urea
(b) Carbon dioxide
(c) Bilirubin
(d) Glucose

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Total score: /10

Answer key:

Question 1: c

Question 2: b

Question 3: a

Question 4: b

Question 5: d

Question 6: b

Question 7: c

Question 8: c

Question 9: c

Question 10: d