1) Which organ is in excretion process ? Choose all correct answers a) Urethra b) Liver c) Lungs d) Stomach e) Urinary bladder f) None of these 2) What is function of kidney ? a) Remove waste product from body b) Balance the body fluid c) Releases harmones that regulate body pressure d) All of these 3) Function of ureters a) Stores urine b) carry the urine away from kidneys to the urinary bladder c) Release urine from body d) None of these 4) Which organ stores urine? a) Urethra b) Urinary bladder c) Ureters d) Kidneys 5) What urethra do? a) The tube through which urine leaves the body. b) Stores urine c) Regulates body pressure d) None of these 6) What urine contains? a) Only water b) water, urea (from amino acid metabolism), inorganic salts, creatinine, ammonia, and pigmented products of blood breakdown c) Salt 7) Which tube in the urinary system goes from the kidney to the bladder? a) Urethra b) Kidneys c) Ureters d) None of these 8) Excretion is a biological process by which metabolic waste products and toxic materials are removed from the body of an organism. a) True b) False 9) Can we live without excretion a) No b) Yes 10) Can we live without all kidneys a) Yes b) No

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