Question

Which of the following statements about photosynthesis is correct?

• A. The light-dependent reactions take place in the stroma of the chloroplast.
• B. Oxygen is a by-product of the Calvin cycle.
• C. The light-independent reactions convert carbon dioxide into glucose.
• D. Chlorophyll absorbs green light most efficiently.

Hint:

Remember that the Calvin cycle (light-independent reactions) fixes CO\(_2\) into glucose, and oxygen is released during the light-dependent reactions.

Answer 1

The Correct Option is C

- The light-dependent reactions occur in the thylakoid membranes, not the stroma, so (A) is incorrect. 
- Oxygen is released as a by-product of the light-dependent reactions (photolysis of water), not the Calvin cycle, so (B) is incorrect. 
- The light-independent reactions (Calvin cycle) use ATP and NADPH to convert carbon dioxide into glucose, making (C) correct. 
- Chlorophyll absorbs blue and red light most efficiently, and reflects green light, so (D) is incorrect. 
 Answer: \(\boxed{\text{C}}\)