Final answer:
Light is essential in photosynthesis to convert carbon dioxide and water into glucose through light-dependent reactions in chloroplasts.
Explanation:
Light plays a crucial role in photosynthesis as it is the primary energy source used by plants to convert carbon dioxide and water into glucose. During the process, light energy is absorbed by pigments such as chlorophyll in the chloroplasts of plant cells.
This absorbed light energy is then used to power the light-dependent reactions, which occur in the thylakoid membranes of the chloroplasts. These reactions involve the splitting of water molecules, releasing oxygen, and generating ATP and NADPH, which are essential for the subsequent Calvin cycle to produce glucose.
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