Q76
The source of oxygen evolved during photosynthesis is
A.
CO2
B.
H2O
AnswerC.
Carbohydrate
D.
Photosynthetic curve
Answer: Option B
Solution
Answer: Option B
Solution:
The source of oxygen that evolved during photosynthesis is H2O.Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy, through cellular respiration.
Two water molecules are oxidized by the energy of four successive charge-separation reactions of photosystem II to yield a molecule of diatomic oxygen and four hydrogen ions. The oxidation of water is catalyzed in photosystem II by a redox-active structure.