試題詳解

2. What is the main adaptive advantage of the C₄ and CAM photosynthesis strategies over the C₃ strategy?
(A) They help the plant synthesize glucose efficiently under dry conditions.
(B) They allow the plant to fix carbon under conditions of low CO₂.
(C) They allow the plant to fix carbon in cool conditions.
(D) They make it possible for the plant to use the Calvin cycle at night.