Conversion of starch to sugar is essential for A)Stomatal opening B)Stomatal closing C)Stomatal formation D)Stomatal growth
Option A) For keeping the stomata open a constant expenditure of energy is required. This is provided by the conversion of starch to sugar. The stomatal opening is, in turn, related to transpiration which is the evaporation of water from plants. It occurs chiefly at the leaves while their stomata are open for the passage of CO2 and O2 during photosynthesis
