Question

Match the following and choose the correct option :
$\begin{array}{cc}\text{A. Kidney}& \text{1.}C{O}_2+H_{2}O\\ \text{B. Lungs}& \text{2. Bile}\\ \text{C. Liver}& \text{3. Sweat and sebum}\\ \text{D. Skin}& \text{4. Urine}\end{array}$

• A. A-4, B-3, C-2, D-1
• B. A-1, B-3, C-2, D-4
• C. A-4, B-1, C-2, D-3
• D. A-3,B-1, C-2, D-4

Answer 1

The correct option is C A-4, B-1, C-2, D-3

In humans, kidneys are the primary excretory organs. Kidneys remove excretory waste in the form of urine (nitrogenous waste + excess salts + water ).
Other than kidneys there are other accessory excretory organs in our body such as skin, lungs, and liver. These organs excrete waste products in different forms such as,
i) sweat and sebum from the skin
ii) $C{O}_2$ and $H_{2}O$ from the lungs
iii) bile from the liver involving waste products from deamination of amino acids, conversion of ammonia to urea.