Lacteals are involved in the:

Name the part of the alimentary canal where the major absorption of digested food takes place. What are the absorbed forms of different kinds of food materials?

Glucose,galactose,and fructose all have the same molecular formula $(C_6H_{12}O_6)$,but their absorption through the intestinal mucosal cells takes place at:

Match the following columns:

Column-$I$	Column-$II$
$a$. Mouth	$i$. Absorption of water and salt
$b$. Stomach	$ii$. Absorption of amino acids
$c$. Small intestine	$iii$. Absorption of alcohol
$d$. Large intestine	$iv$. Absorption of some drugs

Define the following terms:
$(1)$ Absorption
$(2)$ Assimilation

Select the correct option for the organs and the substances absorbed in them.

$P$. Mouth	$I$. Certain drugs
$Q$. Stomach	$II$. Water, certain minerals, and drugs
$R$. Small intestine	$III$. Glucose, fructose, fatty acids, glycerol, etc.
$S$. Large intestine	$IV$. Water, simple sugars, and alcohol