Question

Why are veins present on the lamina of a leaf? please answer asap​

Answer 1

Answer:

Veins are composed of xylem and phloem cells embedded in parenchyma, sometimes sclerenchyma, and surrounded by bundle sheath cells. 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.

Answer 2

$\huge\tt\red{Answer}$

Overall structure of the leaf venation. ... 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.