1. Formation of urea occurs in   Kidneys   Pancreas   Liver   Small intestine   Hint Half-n-half Clue   2. Identify urethra in this diagram.   1   2   3   4   Half-n-half Clue   3. True or False: Malpighian body is a part of nephron.   True   False   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. Main function of the _______ is to filter the wastes from the blood and excrete them in the form of urine.   Lungs   Kidneys   Endocrine glands   Urinary Bladder   Half-n-half Clue   6. Which of these is not an excretory organ: intestine, lungs, thyroid or kidneys?   Kidneys   Lungs   Intestine   Thyroid   Half-n-half Clue   7. 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