$A-$ About $30\%$ of starch is hydrolyzed by salivary amylase (optimum $pH\, 6.8$) in the buccal cavity.
$R-$ The saliva secreted into the oral cavity contains electrolytes $(Na^+, K^+, Cl^-, HCO_3^-)$ and enzymes,salivary amylase and lysozyme.

Analogy type questions:
$(1)$ In saliva : Amylase :: In gastric juice : ......
$(2)$ $pH$ of gastric juice : $1.8$ :: $pH$ of saliva : .........

Consider the following statements regarding digestion and absorption in mammals. Identify whether they are true or false and select the correct option accordingly.
$I.$ Both Kupffer's cells and Glisson's capsule are characteristics of the mammalian liver.
$II.$ In dentition,thecodont means that teeth are embedded in the socket of jaw bones.
$III.$ There are three pairs of salivary glands in human beings; out of them,the parotid,situated beneath the tongue,is the smallest salivary gland.
$IV.$ Zymogens (inactive forms of enzymes) are not the secretions of peptic cells.

Analogy type questions:
$(1)$ Dental formula of an adult human: $\frac{2123}{2123}$ :: Dental formula of a small child: ..............
$(2)$ Goblet cells: Secretion of mucus :: Oxyntic cells: ............

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

Match the following structures with their respective location in organs:

$(a)$ Crypts of Lieberkuhn	$(i)$ Pancreas
$(b)$ Glisson's Capsule	$(ii)$ Duodenum
$(c)$ Islets of Langerhans	$(iii)$ Small intestine
$(d)$ Brunner's Glands	$(iv)$ Liver

Select the correct option from the following: