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Question
Distinguish between light and dark reactions.
Solution
Difference between light and dark reactions:-
| Light Reaction | Dark Reaction | ||
| 1 | It requires the presence of light. | 1 | It occurs independently of the presence of light. |
| 2 | It occurs in the grana of chloroplast. | 2 | It occurs in the stroma of chloroplast. |
| 3 | It involves absorption of light energy by photosynthetic pigments and its conversion into chemical energy. | 3 | It involves the reduction of carbon dioxide into glucose. |
| 4 | NADPH2 and ATP are produced. | 4 | NADPH2 and ATP produced during the light reaction are used. |
| 5 | Oxygen is liberated. | 5 | Oxygen is not liberated. |
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