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Photosynthesis (CIE IGCSE Biology)
Revision Note
Photosynthesis
- Green plants make the carbohydrate glucose from the raw materials carbon dioxide and water
- At the same time oxygen is made and released as a waste product
- The reaction requires energy which is obtained by the pigment chlorophyll trapping light from the Sun
- So photosynthesis can be defined as the process by which plants manufacture carbohydrates from raw materials using energy from light
- It can be summed up in the following equation:
Exam Tip
If asked for the raw materials required for photosynthesis, the answer is carbon dioxide and water.
Although required for the reaction to take place, light energy is not a substance and therefore cannot be a raw material.
Photosynthesis Word Equation
Photosynthesis word equation
How plants get the materials they need
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