Photosynthesis is considered an endothermic reaction, because during the process of photosynthesis, energy from the sun or sunlight is being absorbed.
Any chemical reactions that absorb heat energy from the surroundings to form products is termed the endothermic reaction.
ahh sis i didn't forget u don't misunderstand me .... * sad pout * i was just busy these days and today i am damn tired i really feel like crying that much my legs are paining....huhh...gn sweet dreams to u too... :)