Is photosynthesis endothermic or exothermic - organic chemistry

The light required is absorbed by a green pigment called chlorophyll in the leaves.

Plants store energy through the endothermic reactions of photo- synthesis.

It may involve a single chemical reaction or a series of chemical reaction.

Example: When carbon reacts with oxygen, it produces carbon dioxide and heat energy.

That creates a pressure that will make rotate the stomates, and at their full rotation there is an aperture, very small.

While, the exothermic reaction releases energy into the surrounding from the system.