Question

Presence of stomata on the surface of dorsiventral leaf is a mechanism of

• A. Reduction in transpiration
• B. Protection from dust
• C. Proper regulation of transpiration
• D. Increase in transpiration

Answer 1

The correct option is A Reduction in transpiration

Transpiration is the process of evaporation of water through aerial parts ( leaves and stem ) of plants. 97-99 % of water absorbed through roots is lost by transpiration. In leaves, there are pores called stomata for transpiration.

In dorsiventral leaves, these leaves have somewhat difference in anatomy like no. of stomata. On the lower side or ventral side more no. of stomata are present in comparison to the dorsal side to reduce transpiration. As sunlight can not directly approach the stomata present at the lower side.

So the correct answer is 'Reduction in transpiration'.