The by-product of photosynthesis is? by Sunday | Sep 5 | Biology JAMB | 0 comments A. CO2 B. O2 C. C6H12O6 D. H2O Correct Answer: Option B – O2 Users Also Read These:The product cost that does not form part of the…The difference between the gross domestic product…The first stable product of photosynthesis is?The Net National Product (NNP) is Gross National…The by-product in plant photosynthesis is?