EXCRETORY SYSTEM
KIDNEY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is a correct example of excretion in mammals?
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The production of carbon dioxide from aerobic respiration
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The removal of excess salts from the blood
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The removal of undigested food from the anus
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The release of hormones from glands
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Explanation:
Detailed explanation-1: -Sweat excretes excess salt and water from the body.
Detailed explanation-2: -Mammals excrete nitrogenous wastes in the form of urea. Excretion of ammonia requires a lot of water. So, aquatic organisms excrete ammonia directly. The terrestrial organisms cannot afford to excrete that much water.
Detailed explanation-3: -Excretory product of mammals is generally urea. Urea is less toxic than ammonia so it can be stored in the body for longer duration. The extra proteins in the body are degraded by the process of deamination where the NH2 group is removed and it is converted into ammonium ions in the liver.
Detailed explanation-4: -Ammonia. Carbon Dioxide. Urea. Uric Acid. Guanine. Creatine. 25-Jan-2020
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