Select the incorrect option regarding the digestion and absorption of substances in different parts of the digestive system.

Match the following:

Column-$I$	Column-$II$
$(I)$ Chymotrypsin	$(a)$ Starch
$(II)$ Amylases	$(b)$ Monoglycerides
$(III)$ Nucleases	$(c)$ Dipeptides
$(IV)$ Lipases	$(d)$ Nucleosides

Select the correct match.

List-$I$	List-$II$
$(A)$ Hepatic lobule	$(i)$ Submucosal gland
$(B)$ Brunner's gland	$(ii)$ Base of villi
$(C)$ Crypts of Lieberkuhn	$(iii)$ Glisson's capsule
$(D)$ Sphincter of Oddi	$(iv)$ Gall bladder
	$(v)$ Hepato-pancreatic duct

Choose the correct sentences.
$(1)$ Electrolytes like $Na^+, K^+, Cl^-, HCO_3^-$ are present in saliva.
$(2)$ Starch is converted into maltose by the help of salivary amylase at $pH \, 6.8$.
$(3)$ The intrinsic factor of the stomach is essential for the absorption of vitamin $B_{12}$.
$(4)$ Di- and monoglycerides are broken down into fatty acids and glycerol by lipases.

State the function of saliva.

Which one of the following statements is/are correct?
$I.$ Frenulum is the fold by which the tongue is attached to the floor of the mouth or oral cavity.
$II.$ The lower surface of the tongue has small projections which bear taste buds.
$III.$ The pharynx is the common passage for food and air.
$IV.$ The sphincter of Oddi guards and regulates the opening of the stomach into the duodenum.
$V.$ The colon is divided into an ascending,a transverse,a descending part,and a sigmoid colon.