Match the following columns regarding the absorption of substances in the human digestive system:

Column-$I$	Column-$II$
$(a)$ Small intestine	$(1)$ Certain drugs
$(b)$ Stomach	$(2)$ Water,some minerals,and drugs
$(c)$ Mouth	$(3)$ Water,simple sugars,and alcohol
$(d)$ Large intestine	$(4)$ Glucose,fructose,and amino acids

Read the following statements thoroughly and identify whether they are true or false. Choose the right option accordingly.
$I.$ Bile is produced and stored in the liver and gall bladder,respectively.
$II.$ Common bile duct is the fusion of the right and left hepatic duct.
$III.$ Hepato-pancreatic duct opens into the proximal part of the small intestine.
$IV.$ Pancreas consists of two parts,exocrine and endocrine.
$V.$ Pepsinogen,a secretion of chief cells,is activated by hydrochloric acid.
$VI.$ Peptides are converted into dipeptides with the action of carboxypeptidase.

Match Column $I$ with Column $II$ and select the correct option.

Column $I$ (Part of the alimentary canal)	Column $II$ (Shape)
$i$. Duodenum	$a$. Worm-like
$ii$. Stomach	$b$. $U$-shaped
$iii$. Tongue	$c$. $J$-shaped
$iv$. Appendix	$d$. Triangular

Match column $I$ with column $II$:

Column $I$ (Component/Process)	Column $II$ (Associated Part/Enzyme)
$(a)$ Bilirubin and biliverdin	$(i)$ Parotid
$(b)$ Hydrolysis of starch	$(ii)$ Bile
$(c)$ Digestion of fat	$(iii)$ Lipases
$(d)$ Salivary gland	$(iv)$ Amylases

Given below are two statements:
$Statement I$: The cardiac sphincter prevents regurgitation of food from the stomach to the duodenum.
$Statement II$: The pyloric sphincter regulates the flow of food from the oesophagus to the stomach.
In the light of the above two statements, choose the most appropriate answer from the options given below.

Some animals eat their feces to digest the cellulose contents again; such animals are known as: