Ans fast
Q.15. Nonciliated simple columnar epithelium often contains ___________, which increases the surface area for secretion and absorption.
(1) flagella
(2) collagen fibres
(3) microvilli
(4) all of these

Dear student,
The correct answer is (c). The non-ciliated simple columnar epithelium often contains microvilli on their free surface which increases the surface area for secretion and absorption in the organs like stomach and intestine.
Regards