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Photosynthesis is a process done by plants (as well as algae and some other prokaryotes) that converts energy from the sun into a usable form of energy, called glucose. [1]

- light energy is absorbed by chlorophyll

- absorbed light energy is used to convert carbon dioxide (from the air) and water (from the soil) into a sugar called glucose

- oxygen is released as a by-product [2]

BBC Bitesize - Photosynthesis



[1] From Socratic App - Photosynthesis Overview


Factors affecting photosynthesis

Light intensity

- Without enough light, a plant cannot photosynthesise very quickly - even if there is plenty of water and carbon dioxide. Increasing the light intensity will boost the rate of photosynthesis.

Carbon dioxide concentration

- Even if there is plenty of light, a plant cannot photosynthesise if there is insufficient carbon dioxide.


- If it gets too cold, the rate of photosynthesis will decrease. Plants cannot photosynthesise if it gets too hot.

Wikipedia - Photosynthesis


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