Question

where does the light reaction of photosynthesis take place? a) in the thylakoid membrane b) in the stroma of the chloroplast c) in the plasma membrane d) in the chloroplast lumen

Explanation:

The light - dependent reactions of photosynthesis occur in the thylakoid membrane. Pigments and protein complexes involved in capturing light energy and generating ATP and NADPH are located here. The stroma is where the light - independent reactions (Calvin cycle) occur. The plasma membrane is not involved in photosynthesis reactions. The chloroplast lumen is part of the thylakoid structure but the reactions mainly occur on the membrane.

Answer:

A. In the thylakoid membrane