AP BIOLOGY

Detailed explanation-1: -In the center of the leaf, a large central vein stands out. This is the midrib or midvein.

Detailed explanation-2: -Midrib: It is a large strengthened vein that is present along the midline of a leaf.

Detailed explanation-3: -mid·rib ˈmid-ˌrib. : the central vein or ridge of a leaf or a leaflike part.

Detailed explanation-4: -The vein xylem transports water from the petiole throughout the lamina mesophyll, and the phloem transports sugars out of the leaf to the rest of the plant.

Detailed explanation-5: -Different Parts of the leaf: The distinct middle line in leaf is called the midrib. The other lines in the leaf are called the veins. The veins together form a design called the leaf venation.