試題詳解

55. The alternative pathways of photosynthesis using the C4 or CAM systems are said to be compromises. What is the reason?
(A) CAM plants allow more water loss, while C4 plants allow less CO2 into the plant.
(B) C4 plants allow less water loss but CAM plants allow more water loss.
(C) C4 and CAM plants both minimize photorespiration and optimizes the Calvin cycle.
(D) C4 and CAM plants minimize both water loss and rate of photosynthesis.
(E) C4 plants compromises on water loss and CAM compromises on photorespiration.