Answer briefly : (a) Why are villi present in the intestine and not in the stomach ? (b) How does pepsinogen change in

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Q 1974591456.     Answer briefly :
(a) Why are villi present in the intestine and not in the stomach ?
(b) How does pepsinogen change into its active form?
(c) What are the .basic layers of the wall.of alimentary canal.?
(d) How docs bile help in the digestion of fats?

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(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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