Q1. Which process is responsible for ATP synthesis in the chloroplast?A. Substrate-level phosphorylationB. Oxidative phosphorylationC. PhotophosphorylationD. Glycolysis
Q3. Which of the following statements about the Z-scheme of electron transport is incorrect?A. It involves both Photosystem I and Photosystem II.B. Electrons move in a linear path from water to NADP+.C. Oxygen is released as a by-product.D. Electrons return to Photosystem II after excitation.
Q4. Why do C₃ plants show lower productivity than C₄ plants in hot climates?A. C₃ plants use more ATPB. C₃ plants undergo high rates of photorespirationC. C₃ plants fix CO₂ fasterD. C₃ plants have Kranz anatomy
Q5. What is the function of plastoquinone in the electron transport chain?A. Accepts electrons from PSII and transfers them to the cytochrome complexB. Transfers electrons to NADP⁺C. Carries protons across the membraneD. Synthesizes ATP
Q6. Which of the following conditions favors photorespiration?A. High carbon dioxide concentrationB. Low temperatureC. High oxygen concentrationD. Abundant water supply
Q7. Which of the following occurs only in the bundle sheath cells of C₄ plants?A. PhotorespirationB. Calvin cycleC. C₄ pathwayD. Light reaction
Q8. Which of the following statements about Photosystem II (PSII) is correct?A. PSII absorbs light at a wavelength of 700 nm.B. PSII is responsible for photolysis of water.C. PSII transfers electrons directly to NADP+.D. Oxygen is not produced in PSII.
Q9. What is the major function of carotenoids in photosynthesis?A. Absorb green lightB. Transfer electrons to PSIC. Prevent photo-oxidation of chlorophyllD. Store energy