-
Demonstrated that most material in a plants body does not come from soil; he suggested it came from water
-
Suggested plants get some nourishment from air
-
Showed that plants could ‘restore’ air injured (by respiration)
-
‘injured air’ and that only the green parts do this; all parts of plants "injure" air, ie. respire
-
Oxygen discovered and named "restored air". Carbon dioxide discovered and identified as "injured air"
-
Discovered plant respiration, and that chlorophyll is found in chloroplasts; showed that starch grains form during photosynthesis, and that plants take in and use minerals from the soil; showed that minerals were required for making chlorophyll
-
Showed that oxygen was produced by chloroplasts, and that red and blue light are the most important wavelengths for photosynthesis