Photosynthesis

Science — Second Preparatory

The two stages of photosynthesis

Comparison aspect	Main idea	Keywords
The light-dependent stage	needs light directly. Water is split oxygen is released and energy-rich compounds are formed	needsdirectlyWatersplit
The light-independent stage	does not need light directly. Carbon dioxide is fixed and glucose is built from it using the energy stored in the first stage	doesneeddirectlyCarbon
•	So the plant needs light to store energy but glucose formation can continue for a short time after the light is removed	plantneedslightstore

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