1. 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   Hint Half-n-half Clue   2. 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   3. True or False: Malpighian body is a part of nephron.   True   False   4. 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   5. Bag like structure in which urine is stored.   Stomach   Urinary Bladder   Ureter   Kidney   Half-n-half Clue   6. Identify urethra in this diagram.   1   2   3   4   Half-n-half Clue   7. Which of these is not an excretory organ: intestine, lungs, thyroid or kidneys?   Thyroid   Kidneys   Intestine   Lungs   Half-n-half Clue