Arrangement of veins and veinlets in the leaf blade is called?

• A. Petiole
• B. Pulvinous
• C. Venation
• D. Lamina/Leaf Blade

Answer: (C)

The arrangement of veins and veinlets in the leaf blade is described by venation. Venation names how the vascular tissue branches from the main vein and forms a network across the lamina, enabling support and the transport of water, minerals, and sugars. This term fits best because it directly refers to the vein pattern itself, whereas the stalk of the leaf is the petiole, the broad leaf surface is the lamina, and the pulvinus relates to a swollen joint that aids movement rather than the vein arrangement. Some leaves show reticulate venation, others parallel, with variations like pinnate or palmate patterns, illustrating how the pattern can differ among plant groups.