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 anticlinal (radial and transverse, i.e. perpendicular to the root's surface) walls which are made of
suberin mainly, a waxy substance which is water resistant. Water can only enter the root through the interior of cells (the symplast) as opposed to passing between cells (the apoplast). This means that the plant can directly regulate what enters the root proper.
See more at Wikipedia.org...
Endoderme
Endodermis
endodermis
داخلى ترين بافت پوسته ريشه وساقه
endodermis
endodermis
\en`do*der"mis\ (?), n. [nl. see endoderm.] (bot.) a layer of cells forming a kind of cuticle inside of the proper cortical layer, or surrounding an individual fibrovascular bundle.