Mention the major events during photosynthesis.

(N/A) The major events during photosynthesis are:
$(a)$ Absorption of light energy by chlorophyll.
$(b)$ Conversion of light energy into chemical energy and splitting of water molecules $(H_2O)$ into hydrogen $(H_2)$,oxygen $(O_2)$,and electrons $(e^-)$.
$(c)$ Reduction of carbon dioxide $(CO_2)$ to carbohydrates.