Question

why is photosynthesis considered as endothermic reaction​

Answer 1

Photosynthesis is an endothermic reaction because sunlight energy is absorbed during the process of photosynthesis by the plants. And our definition says that when in a reaction heat is absorbed it is termed as endothermic reaction.

Answer 2

Answer :-

Photosynthesis is an endothermic reaction because sunlight is being absorbed during the reaction and the definition suggests that in a reaction if heat is being absorbed it is termed as an endothermic reaction.