Sunday, February 7, 2010

Why is the cuticle thicker on the upper surface of the leaf than on the lower surface?

the functions of the cuticle include reflection (filtering) of light rays from the sun and providing a water proof film for the leaf.


The upper surface of the leaf has more exposure to these elements so it requires a thicker cuticle.Why is the cuticle thicker on the upper surface of the leaf than on the lower surface?
I don't know....but I would guess either to help protect it from elements, or to help aid in photosynthesis.
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