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cuticles
waxy coating on the epidermis of leaves. adapts to the contour of the cells and is preserved.
stomata
apertures in the epidermis, bounded by 2 guard cells. allow gases to move in and out of the leaf (CO2, H2O, O2)
anomocytic - guard cells of stomata are not surrounded by any subsidiary cell
paracytic - guard cells acompanied by 2 subsidiary cells. longitudinal axis parallel to guard cells and aperture
diacytic - 1 or more subsidiary cells enclosing the stoma. walls of subsidiary are perpendicular to guard cells
anisocytic - guard cells surrounded by 3 unequal subsidiary cells. common wall at right angle to longitudinal axis of stomata
cyclocytic - 2 or more subsidiary cells form 1 or 2 narrow rings around the cells