False. The light dependent reactions of photosynthesis actually occur in the thylakoid membranes of the chloroplasts, not in the stroma. During these reactions, light energy is captured and converted into chemical energy in the form of ATP and NADPH. The stroma, on the other hand, is where the light independent reactions, also known as the Calvin cycle, take place. In summary, the distinction between the thylakoid membranes and the stroma is crucial to understanding the overall process of photosynthesis.