試題詳解

54. Which of the following statements about both C4 and crassulacean acid metabolism (CAM) plant is INCORRECT?
(A) Both adaptations are characterized by preliminary incorporation of CO₂ into organic acids, followed by transferring of CO₂ to the Calvin cycle.
(B) In C4 and CAM plants, carbon fixation and the Calvin cycle occur in the same cells at different time.
(C) The C4 and CAM pathways are two evolutionary solutions to the problem of maintaining photosynthesis with stomata partially or completely closed on hot, dry days.
(D) The C4 plants are so named because they preface the Calvin cycle with an alternate mode of carbon fixation that forms a four-carbon compound as its first product.
(E) The mesophyll cells of CAM plants store the organic acids they make during the night in their vacuoles until morning, when the stomata close.