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During photosynthesis and cellular respiration, oxygen is converted to water.
The splitting of water during photosynthesis is called photolysis. It is the decomposition of water molecules by the action of light.
Oxygen is not use.Oxygen is produced in photosynthesis when breaking of water molecules to obtain electrons.
Water splits into Protons, electrons, and Oxygen
Water participates directly in the light reactions of photosynthesis by donating electrons to photosystem II. Photosystem I and photosystem II both contain chlorophyll as molecules.
No, water is not produced.Water is broken down to get electrons.
The supply of electrons in photosynthesis comes from water.
Ultimately, the electrons taken when water is split in photosystem II during the process of photolysis.Photosystems loose electrons during light reactions.Their lost electrons are replaced by photolysis of water
oxygenIt is produced by spliting of water molecules. Water is splitted to get necessary electrons
It is produced from water. Water is broken down by photolysis to get electrons.
Water is splited there . That is to obtain electrons
During photosynthesis and cellular respiration, oxygen is converted to water.
Electrons (with accompanying protons) are added to CO2 during photosynthesis.Electrons (with accompanying protons) are removed from CO2 during photosynthesis and added to water molecules to form sugar.Hydrogen is added to CO2 during photosynthesis.Oxygen is removed from CO2 during photosynthesis.
Water 
The splitting of water during photosynthesis is called photolysis. It is the decomposition of water molecules by the action of light.
electrons
Oxygen is not use.Oxygen is produced in photosynthesis when breaking of water molecules to obtain electrons.