試題詳解

36. How do C3, C4, and CAM plants differ in their carbon fixation strategies?
(A) C3 plants use the Calvin cycle only, while C4 and CAM plants have additional mechanisms to reduce photorespiration.
(B) C4 plants keep stomata open at night for CO₂ intake, while CAM plants do so during the daytime for photosynthesis.
(C) CAM plants directly convert fixed carbon into glucose.
(D) C3 plants store CO₂ as malate in their cells before using it for photosynthesis.
(E) C4 and CAM plants rely only on rubisco for carbon fixation.