Which of the following characteristics correctly distinguishes Crassulacean acid metabolism (CAM) plants from C4 plants?
- A) CAM plants fix atmospheric carbon into a three-carbon compound initially, whereas C4 plants fix carbon into a four-carbon compound.
- B) CAM plants rely solely on RuBisCO for initial carboxylation, whereas C4 plants utilize phosphoenolpyruvate carboxylase.
- C) CAM plants separate initial carbon fixation and the Calvin cycle temporally, whereas C4 plants separate these processes spatially.
- D) CAM plants open their stomata during hot daytime hours, whereas C4 plants keep their stomata open continuously during the night.
