Leaf venation refers to the pattern of veins in a leaf, which plays a crucial role in transporting water, nutrients, and sugars throughout the plant. There are two main types of venation: pinnate and palmate. In pinnate venation, a single central vein, or midrib, extends from the base to the tip, with smaller veins branching off. In palmate venation, multiple main veins spread out from a single point at the base of the leaf. The arrangement of veins also affects the leaf's shape and overall function. Monocots, like grasses, typically exhibit parallel venation, where veins run parallel to each other. In contrast, dicots, such as roses, often display a more intricate network of branching veins. Understanding leaf venation helps in identifying plant species and studying their adaptations to different environments.