In photosynthesis, oxygen is liberated during

A. Hydrolysis of carbohydrates

B. Breakdown of proteins

C. Reduction of CO₂

D. Hydrolysis of water

Answer: Option D

Solution(By Examveda Team)

In photosynthesis, oxygen is liberated during Hydrolysis of water.
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 electrons yielded are transferred to a redox-active tyrosine residue that is oxidized by the energy of P680⁺. In light, the electron acceptor is reduced and oxygen is evolved.