Tracheid

Real World Example

Imagine trying to drink a thick milkshake through a small straw. Just as the straw is the crucial channel that allows the milkshake to move from the cup to your mouth, a tracheid in a plant acts as a conduit to transport water from the roots to the leaves. Both the straw and the tracheid are essential for moving liquids through a narrow space: the straw is hollow and sturdy to handle the milkshake's thickness, much like the tracheid's thick walls that support and facilitate the upward movement of water within the plant.