AP BIOLOGY

Detailed explanation-1: -In order to reduce the loss of water due to transpiration the dorsiventral leaf has more stomata in the lower surface than the upper surface.

Detailed explanation-2: -Lower surfaces are not directly exposed to sun. This tends to reduce excessive water loss. It is a beneficial adaptation to check water loss in plants. Thus, the underside of leaves have more stomata.

Detailed explanation-3: -Generally lower surface of the leaf has more number of stomata, especially in dicotyledons.

Detailed explanation-4: -In most cases, the lower epidermis contains more stomata than the upper epidermis because the bottom of the leaf is cooler and less prone to water loss.

Detailed explanation-5: -In leaves, there are pores called stomata for transpiration. In dorsiventral leaves, these leaves are slightly different in anatomy like the number of stomata. On the lower side or ventral side more no. of stomata are present in comparison to the dorsal side to reduce transpiration.