Casparian strips are the bands of thicknings present on _____walls of endodermis.

Options

A. radial
B. tangential
C. central
D. both a and b

Answer

D

Explanation

Endodermis is the innermost layer of cortex that consistws of tightly packed barrel shaped cells. It is called starch sheath in case of dicot stems. Radial and and tangential walls of endodermal cells possess thickenings of lignin, suberin and cutin in the form of strips or bands, which are known as casparian bands or casparian strips.