Question

In this process which of the following play important role?

• A. Chlorophyll
• B. Light energy
• C. $C{a}^{++},M{n}^{++},C{l}^{-}$
• D. All of the above

Answer 1

The correct option is B Light energy

The given reaction is of photolysis of water. During photosynthesis, water (H${}_2$O) splits into H${}^{+}$ ions and OH${}^{-}$ ions in presence of light energy. Electrons are released in this reaction and oxygen is evolved as the end product. Hence, the final reaction becomes 4H${}_2$O → 8H${}^{+}$ + 8e${}^{-}$ + 2O${}_2$.

Thus, the correct answer is option B.