Which statements accurately describe the endodermis?
a. It is the innermost layer of the cortex in both roots and stems.
b. In roots, it comprises a single layer of barrel-shaped cells without intercellular spaces.
c. The endodermal cells of the root have Casparian strips made of suberin.
d. In a dicot stem, the endodermis is rich in starch grains and is called the starch sheath.
e. The endodermis regulates the passage of water and minerals into the vascular cylinder in the root.
f. The Casparian strip is permeable to water.
g. The endodermis is part of the stele.
