Organ is an organism that is a collection of tissues and it perform a specific functions.It is found in the higher biological systems like plants, animals, and human beings. While the organelle is a part of a cell that specialized units and capable of performing a specific function for the cell. It is a very small subunits inside a cell.
Oxygen levels make no impact, they need CO2.
Sugar concentration makes no impact as that is a product.
Starch makes no impact.
Only light from the choices above is the factor in photosynthesis that could have the greatest effect as it is not a product yet a reactant
