Question

The site of light reactions of photosynthesis occurs on

• A. Stroma
• B. Cytosol
• C. Thylakoid membrane
• D. Inner mitochondrial membrane

Hint:

Photosynthesis occurs at two locations: \[ \boxed{ \begin{aligned} \text{Light reaction} &\rightarrow \text{Thylakoid membrane} \text{Calvin cycle} &\rightarrow \text{Stroma} \end{aligned} } \]

Answer 1

The Correct Option is C

Step 1: Recall the two stages of photosynthesis. Photosynthesis consists of
• Light reactions,
• Dark reactions (Calvin cycle).

Step 2: Identify the site of light reactions. The light-dependent reactions occur on the \[ \boxed{\text{Thylakoid membrane}} \] of chloroplasts, where chlorophyll, Photosystem I, Photosystem II and the electron transport chain are located. The Calvin cycle occurs in the stroma. Therefore, \[ \boxed{\text{Thylakoid membrane}} \] is the correct answer. Hence, \[ \boxed{(C)} \] is the correct answer.