Question

Dark reaction of photosynthesis occurs in

• A. Thylakoid membrane
• B. Membranes of stroma lamellae
• C. Between two membranes of chloroplast
• D. Stroma of chloroplast outside lamellae

Answer 1

The correct option is D Stroma of chloroplast outside lamellae

The dark reaction of photosynthesis takes place in the stroma of the chloroplast. The enzymes of stroma which are present outside the grana lamellae do not require light but require ATP and NADPH${}_2$ produced in the light reaction. It is also known as light independent reaction.

Thus, the correct answer is option A.