How phoshorylase enzyme open the stomata in starch sugar interconversion theory ?

Explanation

1. The discovery of enzyme phosphorylase in guard cells by Hanes (1940) greatly supports the starch - sugar interconversion theory.
2. The enzme phosphorylase hydrolyses starch into sugar and high pH followed by endosmosis and the opening of stomata during light. The vice versa takes place during the night.