Since energy is used, the type of reaction photosynthesis is : ( A ) Endergonic reaction
<h3>What is Endergonic reaction ?</h3>
Endergonic reaction is a type of reaction that requires a free energy to continue, since photosynthetic organisms such as green algae require the use of free energy ( solar photons ) to reduce CO₂ and oxidation of H₂O to oxygen.
Therefore we can conclude that photosynthesis is an example of an endergonic reaction.
