Conversion of starch to organic acids is required for (a) stomatal opening (b) stomatal closing (c) stomatal formation (d) stomatal activity
Option A There is evidence to believe that besides organic acids the turgidity of guard cells is usually controlled by K + , Cl – and H + . The opening of stomata is initiated by exertion of H + by guard cells, intake if K + and Cl – , disappearance of starch and appearance of organic acids like malic acid.
