STANDARD Botany Light Reaction MCQ Question
The first event in photosynthesis is
Synthesis of ATP
Photoexcitation of chlorophyll and ejection of an electron
Photolysis of water
Release of oxygen
Correct Answer
Detailed Explanation
The first event in photosynthesis is excitation of chlorophyll in the presence of light having wavelength 680 nm. The photoexcited electron is transferred from chlorophyll P₆₈₀ in photosystem II, converting it to its excited state. Then water is split to replace the electron.
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