Choose the correct answer among the following:
$(a)$ Gastric juice contains
$(i)$ pepsin,lipase and rennin
$(ii)$ trypsin,lipase and rennin
$(iii)$ trypsin,pepsin and lipase
$(iv)$ trypsin,pepsin and renin
$(b)$ Succus entericus is the name given to
$(i)$ a junction between ileum and large intestine
$(ii)$ intestinal juice
$(iii)$ swelling in the gut
$(iv)$ appendix

(A-I, B-II) $(a): (i)$ Gastric juice contains pepsin,lipase,and rennin. Pepsin is secreted in an inactive form as pepsinogen,which is activated by $HCl$. Pepsin digests proteins into peptones. Lipase breaks down fats into fatty acids. Rennin is a proteolytic enzyme present in the gastric juice of infants,which helps in the coagulation of milk.
$(b): (ii)$ Succus entericus is another name for intestinal juice. It is secreted by the intestinal glands. Intestinal juice contains a variety of enzymes such as maltase,lipases,nucleosidases,and dipeptidases.