Photosynthesis (Cambridge (CIE) IGCSE Biology)
Revision Note
Written by: Lára Marie McIvor
Reviewed by: Lucy Kirkham
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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:
Examiner Tips and Tricks
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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