Question

Why does the lower epidermis have more stomata than the upper epidermis of a leaf?

Answer 1

the lower epidermis has more, because it is more often in the shade and so it is cooler, which means evaporation won't take place as much.

Step-by-step explanation:

Answer 2

The lower epidermis has more stomata because the evaporation of water through the stomata is less likely to occur in the shade the leaf provides as well as keeping that area cool.