AP BIOLOGY

Detailed explanation-1: -The arrangement of veins and veinlets on the lamina of a leaf is called venation. Their important function is to conduct water through xylem, provide channel for translocation of organic nutrients and conduction of minerals.

Detailed explanation-2: -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-3: -These veins consist of both xylem and phloem vascular bundles for different functions, xylem for transportation of water and mineral, and phloem for transportation of food that is prepared in the process of photosynthesis.

Detailed explanation-4: -Solution: ∙Venation is the arrangement of veins and veinlets in the leaf lamina. ∙Reticulate venation is the characteristic of dicots whereas parallel venation is found in monocots.