Cuticle coating on leaves, and thick epidermal call walls.
Scientific theories can be revised, changed, or even rejected.
epidermal cells are closely packed cells that secrete a waxy Cuticle that helps slow or prevent water loss.
Function of Cuticle:
Cuticle covers the leaves surface area and thus produce an obstruction in the transpiration activity (loss of water through leaves). In this way cuticle prevents or slow down the water loss.
So you get accurate results.
