Which of the following protein complex involved in breakdown of water ?

Q. Which of the following protein complex involved in breakdown of water ?

A) PS II Complex
B) cytochrome B6/f Complex
C) manganese stabilizing Complex
D) light harvesting Complex

... Answer is B) PS II Complex

An early sign of heat stress to photosynthetic machinery is the damage in photosystem II (PSII) reaction center housed in the thylakoid membranes of the chloroplasts. The PS II complex is the first protein-pigment complex involved in the light-dependent reactions of photosynthesis and is responsible for splitting water into hydrogen and oxygen, as well as generating electrons for transport to other photosynthetic machinery and generating hydrogen ions to create the proton gradient needed for ATP synthesis.