The mucus-secreting cells of the intestinal mucosal epithelium are $...............$ .

Usually,the digestion of cellulose in herbivorous animals takes place in . . . . . . .

Name different types of teeth and their number in an adult human.

What is the dental formula of a $3$-year-old child?

Match the names of glands listed under column $-I$ with the location given under column $-II$, choose the answer which gives correct combination of the alphabets of the two columns.

Column $-I$ (Glands)	Column $-II$ (Location)
$(A)$ Crypts of Lieberkuhn	$(p)$ Loop of duodenum
$(B)$ Pancreas	$(q)$ Stomach
$(C)$ Adrenal gland	$(r)$ Intestine
$(D)$ Gastric gland	$(s)$ Kidney

Which of the following parts of the digestive system does not secrete any digestive enzyme?