The by-product of photosynthesis is? By: Sunday|Published on: Sep 5|Categories: Biology JAMB| 0 comments A. CO2 B. O2 C. C6H12O6 D. H2O Correct Answer: Option B – O2 Users Also Read These:When the total product starts falling; then the…When the marginal product is negative, the total…The product cost that does not form part of the…The relationship between Marginal Product (MP) and…If the price of product K declines, the demand curve…SEE ALSO Which of the labelled parts enable the animal to stay under-water most of the time?