I want to know the answer to the following question:
Where does water splitting occur?
All the background I'm provided with is that "Some such organisms, including the alga Chlamydomonas reinhardtii and cyanobacteria, have evolved a second step in the dark reactions in which protons and electrons are reduced to form H2 gas by specialized hydrogenases in the chloroplast.". Is that enough to answer the question?