Q1. Which molecule acts as the final electron acceptor in non-cyclic electron transport?A. PlastoquinoneB. FerredoxinC. NADP⁺D. ATP
Q2. Which part of the chloroplast contains the enzyme RuBisCO?A. Thylakoid membraneB. StromaC. GranaD. Lumen
Q3. Which enzyme catalyzes the fixation of carbon dioxide in the Calvin cycle?A. ATP synthaseB. RuBisCOC. PEP carboxylaseD. NADP reductase
Q4. What is the final electron acceptor in the light-dependent reactions of photosynthesis?A. OxygenB. ATPC. NADP⁺D. Water
Q5. Which of the following is a correct statement about cyclic photophosphorylation?A. It involves both Photosystem I and II.B. It produces both ATP and NADPH.C. Electrons return to Photosystem I after energy transfer.D. Oxygen is released during this process.
Q6. Which compound is reduced during the light-dependent reactions of photosynthesis?A. NADP⁺B. RuBPC. ADPD. PGA
Q7. What is the primary purpose of photorespiration in C₃ plants?A. Generate ATPB. Increase glucose synthesisC. Recycle oxygenD. It has no known beneficial role
Q8. What happens during the regeneration phase of the Calvin cycle?A. RuBP is synthesizedB. ATP and NADPH are used to fix CO₂C. Oxygen is releasedD. Glucose is formed
Q9. Which of the following statements about the C3 cycle is incorrect?A. It takes place in the stroma of chloroplasts.B. 3-PGA is the first stable product.C. It requires ATP and NADPH.D. Carbon fixation occurs in bundle sheath cells.
Q10. Which of the following statements about CAM plants is incorrect?A. They open their stomata at night.B. They store CO2 as organic acids.C. They perform the Calvin cycle during the day.D. They fix CO2 and release O2 at night.