Question

Why the number of stomata are more on the lower side of the leaf than on the upper side in most of the plants?

Answer 1

1. The loss of water by evaporation in plants is called transpiration.
2. Transpiration takes place through the stomata in plants.
3. The factors that increase transpiration are sunlight, temperature, and wind.
4. The stomata on the upper surface of the leaves are responsible for higher transpiration as they are directly exposed to sunlight and wind.
5. The greater number of stomata on the lower side of the leaves prevents the excessive loss of water by transpiration.
6. Stomata on the lower surface of the leaves prevent the plant from dehydration.