DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 4 The main organ of the human excretory system through which waste material is eliminated from the body is kidney. What is the major excretory product in humans?(a) Sweat
(b) Water
(c) Urea
(d) Salt

Correct Answer: (b) water

Explanation:

Urine is a liquid by-product of metabolism in humans and in many other animals which is secreted by the kidneys through a process called urination and excreted through the urethra.

It contains more than 95% of water, and other constituents such as urea (a waste product that forms when proteins are broken down), chloride, sodium, ammonia, potassium, creatinine (a waste product that forms with the normal breakdown of muscle), and other dissolved ions, and inorganic and organic compounds.

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Updated on: 12-Jan-2023

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