The first step for initiation of photosynthesis will be:

1. Photolysis of water
2. Excitement of chlorophyll molecule due to absorption of light
3. ATP formation
4. Glucose formation

Subtopic:  Light Reaction: Electron Transport |
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What happens in light reaction (Photo chemical reaction):

1. Formation of ATP and NADPH2

2. Formation of ATP

3. Formation of sugar

4. Breakdown of sugar

Subtopic:  Light Reaction: Electron Transport |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology