Botany - Anatomy of Flowering Plants Question with Solution | TestHub

The innermost layer of the cortex is called endodermis. It comprises a single layer of barrel-shaped parenchyma cells without any intercellular spaces. In roots, thick-walled endodermal cells are interrupted by thin-walled passage cells or transfusion tissue. Passage cells facilitate the transportation of water from cortex to pericycle. The passage cells are thin-walled and are usually located opposite the protoxylem.