Quiz for Photosynthesis

Q1: Which pigment is primarily responsible for capturing light in photosynthesis?

A. Chlorophyll a B. Chlorophyll b C. Carotenoids D. Xanthophyll

Q2: The first stable product of C3 cycle is?

A. Oxaloacetic acid B. Pyruvate C. 3-Phosphoglyceric acid D. Malic acid

Q3: Z-scheme of photosynthesis involves?

A. Cyclic photophosphorylation B. Non-cyclic photophosphorylation C. Both cyclic and non-cyclic D. Respiration

Q4: Which structure in chloroplast contains the photosystems?

A. Stroma B. Inner membrane C. Thylakoid membrane D. Outer membrane

Q5: Photorespiration does not occur in?

A. C3 plants B. C4 plants C. All plants D. Bryophytes

Q6: The light-independent reactions occur in?

A. Thylakoid B. Stroma C. Matrix D. Grana

Q7: Which gas is released during photosynthesis?

A. Oxygen B. Carbon dioxide C. Nitrogen D. Hydrogen

Q8: ATP and NADPH are produced during?

A. Dark reaction B. Cyclic photophosphorylation C. Light reaction D. Photorespiration

Q9: CAM plants fix CO₂ at night in the form of?

A. 3-PGA B. Malic acid C. Pyruvate D. Ribulose bisphosphate

Q10: Which molecule is the CO₂ acceptor in Calvin cycle?

A. PEP B. OAA C. RuBP D. PGA

Q11: Hill’s reaction demonstrates?

A. Water splitting B. Carbon fixation C. Glucose formation D. Oxygen absorption

Q12: Cyclic photophosphorylation results in formation of?

A. ATP and NADPH B. Only NADPH C. Only ATP D. ATP, NADPH and O₂

Q13: Site of light reaction in chloroplast is?

A. Stroma B. Outer membrane C. Thylakoid membrane D. Inner membrane

Q14: Rubisco is involved in?

A. Water splitting B. Glucose transport C. Carbon fixation D. Chlorophyll synthesis

Q15: C4 plants show high efficiency of photosynthesis due to?

A. Absence of chloroplasts B. Better root absorption C. Minimized photorespiration D. More leaf area

Q16: PSI and PSII are part of?

A. Light-independent reaction B. Krebs cycle C. Light-dependent reaction D. Glycolysis

Q17: NADPH is formed during?

A. Photorespiration B. Dark reaction C. Light reaction D. Fermentation

Q18: Which is a 4-carbon compound?

A. PGA B. PEP C. RuBP D. NADP+

Q19: End products of light reaction are?

A. O₂ and glucose B. ATP and RuBP C. ATP, NADPH and O₂ D. PGA and NADH

Q20: Blackman’s law relates to?

A. Enzyme activity B. Light and CO₂ dependence C. Water absorption D. Stomatal opening