Which of the following is a protein-energy malnutrition related disorder?

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.

Which of the following will release more energy on oxidation? Arrange them in ascending order.
$(a)$ $1 \; g$ of fat
$(b)$ $1 \; g$ of protein
$(c)$ $1 \; g$ of glucose
$(d)$ $0.5 \; g$ of protein $+ 0.5 \; g$ of glucose

Go through the following statements regarding the physiology of digestion and identify whether they are true or false. Choose an appropriate option from the codes given below:
$I.$ Largest variety of hydrolases are present in omnivores,while the herbivores generally lack digestive enzymes.
$II.$ Digestive enzymes are of four types,namely,amylase,proteinases,lipases,and nucleases.
$III.$ Proteinases are also known as proteases,which are released in the active form because the proteins,either cellular or extracellular,are all hydrolysed by them in the absence of food.
$IV.$ Hydrolases and cholecystokinin are secreted by the exocrine part of the pancreas.

Match the following:

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

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