Macro scientific illustration of a longitudinally cut willow stem with translucent blue water molecules diffusing inward.

Educational scientific illustration of a dark brown willow stem cut longitudinally to reveal its internal fibrous plant structure. From the outer surface, numerous small translucent blue water molecules progressively diffuse inward through the tissue and around the plant cell walls. Clearly show the direction of water penetration from outside to inside. The willow remains dark brown and natural, while the water is represented only by subtle blue translucent particles. Clean composition, realistic botanical structure, macro scale, documentary science film aesthetic, strong visual contrast, dark neutral background, highly detailed but easy to understand at a glance. No text, no labels, no arrows, no hands, no container, no fantasy effects. Ver más