Question

Match the following organs/components with the elements which they help in excreting:
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{i. Lungs}& \text{a. Low amount of nitrogenous waste}\\ \text{ii. Sebaceous secretion}& \text{b. Sodium chloride and lactic acid}\\ \text{iii. Sweat}& \text{c. Hydrocarbons, sterols and waxes}\\ \text{iv. Saliva}& \text{d. Carbon dioxide}\end{array}$

• A. i $\Rightarrow$ a, ii $\Rightarrow$ c, iii $\Rightarrow$ b, iv $\Rightarrow$ d
• B. i $\Rightarrow$ d, ii $\Rightarrow$ c, iii $\Rightarrow$ b, iv $\Rightarrow$ a
• C. i $\Rightarrow$ b, ii $\Rightarrow$ c, iii $\Rightarrow$ d, iv $\Rightarrow$ a
• D. i $\Rightarrow$ a, ii $\Rightarrow$ d, iii $\Rightarrow$ b, iv $\Rightarrow$ c

Answer 1

The correct option is B

i $\Rightarrow$ d, ii $\Rightarrow$ c, iii $\Rightarrow$ b, iv $\Rightarrow$ a

The sebaceous secretion called sebum is not only protective, but also serves as a conduit for excretion of hydrocarbons, sterols and waxes. The main function of sweat is to cool the body down, but it also contains sodium chloride, urea and lactic acid as well, which are removed from the body in small amounts through sweat. The lungs are responsible for the excretion of carbon dioxide produced by our cells. Saliva has a secretory function, as it carries small amounts of nitrogenous waste.