The cuticle is a hydrophobic waxy layer that is coated on the leaf
and the stem of almost all plants. It is made up of epidermal cells and plays
an important role. This picture shows the cuticle layer on the plant. It appears
shiny/waxy because of the wax in the cuticle. Due to it being made of polymer
matrix, it acts like a barrier. The cuticle layer controls how much water
enters and leaves the plant. There is a thicker cuticle layer at the top of the
leaf than anywhere else because the top of the leaf needs protection from the
sun.
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