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Endodermis


Endodermis is the bottom layer of skin.

In plants, it is a thin layer of parenchyma found in roots, just outside the vascular cylinder. It regulates the flow of water. Endodermis is tightly packed together and contains Casparian strips on their radial walls which are made of suberin mainly, a waxy substance which prevents water from flowing back into the soil. Water is thus forced toward the center of the root, into the xylem, where it is then transported into the rest of the plant.


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