Which of the following is the correct sequence of events in photosynthesis? (a) Reduction of CO₂ → Splitting…

Question

Which of the following is the correct sequence of events in photosynthesis?
(a) Reduction of CO₂ → Splitting of water → Absorption of light
(b) Absorption of light → Splitting of water and conversion of light to chemical energy → Reduction of CO₂
(c) Splitting of water → Absorption of light → Reduction of CO₂
(d) Reduction of CO₂ → Absorption of light → Splitting of water

Accepted Answer

## Model Answer **(b) Absorption of light → Splitting of water and conversion of light to chemical energy → Reduction of CO₂** ## Explanation The textbook (Chapter 5, Section 5.2.1) explicitly lists the three events of photosynthesis in order: (i) absorption of light energy by chlorophyll, (ii) conversion of light energy to chemical energy and splitting of water, (iii) reduction of CO₂ to carbohydrates. Option (b) matches this sequence exactly. Always memorise this order as it directly maps to the light reactions followed by the dark reactions (Calvin cycle). Source: Chapter 5, Section 5.2.1 – Autotrophic Nutrition

Science — AI-generated practice question