the light reactions (or photochemical phase) include light absorption, water splitting, oxygen release, and the formation of high-energy chemical intermediates, ATP and NADPH (Source 104). The text explicitly states: "We learnt that the products of light reaction are ATP, NADPH and O2" (Source 116). Of these, O2 diffuses out of the chloroplast, while ATP and NADPH are used in the biosynthetic phase.