Why do green plants need sunlight to perform photosynthesis?

1 Answer
anor277
Aug 13, 2017

Is not the photosynthesis reaction strongly endothermic....?

Explanation:

When hydrocarbons combust the products are carbon dioxide and water. These are stable molecules that possess STRONG C=OC=O and H_2OH2O bonds.

Plants fix atmospheric carbon dioxide, and with water can use photosynthesis to make simple sugars.....

6CO_2(g) + 6H_2O(l) +DeltararrC_6H_12O_6(aq) +6O_2(g)

As written, the reaction is highly endothermic; much energy has to be expended to break the O-H and C=O bonds. From where does the energy come? Does photosynthesis occur at night?

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