Question

Why are large air spaces found near the lower surface of the leaf

Answer 1

Answer:

for the exchange of co2 and o2

Answer 2

The other type of cell is the spongy mesophyll. There's still photosynthesis occurring in the spongy mesophyll, but there are large spaces left between the cells. These large spaces allow these layers to help carbon dioxide move around the leaf. The spongy mesophyll also allows the plant to bend and move in the wind, which itself helps move gases around the leaf's cells.