Jan Ingenhousz, the Dutch-born British physician and scientist, discovered the process of photosynthesis.
Stages of the Process
Photosynthesis occurs in two stages:
- The Light-dependent Reaction
Takes place in the thylakoid membranes of chloroplasts only during the day in the presence of sunlightHigh-energy phosphate molecules adenosine triphosphate (ATP) and the reducing agent NADPH are produced with the help of electron transport chain
- The Light-independent or Dark Reaction (Calvin cycle)
Takes place in the stroma of chloroplast in the absence of light that helps to fix carbonATP and NADPH produced in the light reaction are utilized along with carbon dioxide to produce sugar in the form of glucose
Producing food for organisms that depend on others for their nutrition such as humans along with all other animalsSynthesizing oxygen by replacing carbon dioxide in the atmosphere
