is photosynthesis exothermic or endothermic?

Exothermic and endothermic: Common processes and solved examples | Chemistry | Khan Academy

Photosynthesis requires energy to drive the chemical reaction. Photosynthesis is an endothermic reaction. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.

Why is photosynthesis considered an endothermic reaction ?

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