Question

Why more stomata are present on the underside of the leaf?

Answer 1

Stomata:

1. These are the structures present in leaf epidermis.
2. These are involved in gaseous exchange and vapors loss.
3. The leaves are held horizontally.
4. The upper surfaces of leaves have direct illumination of sun.
5. Lower surfaces are not directly exposed to sun.
6. This tends to reduce excessive water loss.
7. It is a beneficial adaptation to check water loss in plants.
8. Thus, the underside of leaves have more stomata.