1. Identify urethra in this diagram.   1   2   3   4   Hint Half-n-half Clue   2. Which of these is not a function of kidneys? A. Maintenance of acid base balance. B. Excretion of nitrogenous waste products. C. Temperature regulation. D. Maintenance of water balance.   A   B   C   D   Half-n-half Clue   3. Which of these is not true -- A, B, C or D? A. Kidney excretes urea. B. A small fraction of CO2 is removed through the skin. C. Small amount of salt is excreted through skin. D. Feces is excreted through the anus.   A   B   C   D   Half-n-half Clue   4. Which is not true regarding kidneys? A. They do not have any capsule. B. They are bean shaped and reddish brown in color. C. Each kidney is divided into 2 parts - cortex and medulla. D. They are the main excretory organs.   A   B   C   D   Half-n-half Clue   5. True or False: Malpighian body is a part of nephron.   True   False   6. Formation of urea occurs in   Kidneys   Liver   Small intestine   Pancreas   Half-n-half Clue   7. Tuft of capillaries inside the Malpighian body is known as   Nephron   Glomerulus   Collecting ducts   Renal artery   Half-n-half Clue