Question

13. The ileum (small intestine) is a very long and narrow coiled tube. Its inner lining is
produced into a very large number of tiny finger-like processes called villi.
(a) Mention the utility of each of the following features of the intestine :
(i) Great length
(ii) Narrow diameter
(iii) Internal projections (villi)....
(b) Suggest one experiment to demonstrate the action of salivary amylase on starch.​

Answer 1

(I) great length because because they are 30 metres long