Question

Why photosynthesis is considered an Endothermic reaction?

Answer 1

Endothermic reactions are those reaction in which heat is absorbs and photosynthesis take place only in presence of sunlight (heat), plants takes heat from sun to make their food. Hence we can say photosynthesis is an endothermic reaction

Answer 2

photosynthesis is considered an Endothermic reaction because it absorbs energy in order to create its food 

here energy is got from the sun

the reactions which involves the absorption of energy is called endothermic reaction