How could you confirm in the photosynthesis experiment that oxygen and glucose were not the cause behind the color change observed in the experiment, especially Tube P? can someone help me

First described the system of fingerprint ridges and spirals, which eventually were used for fingerprinting. a.) fare and fidelis’s pathology b.) dr. calvin goddard c.) hans gross d.) marcelo malpighi e.) leeuvenhoek’s microscope