In crassulacean acid metabolism (CAM) plants 84) A) malate is stored in large vacuoles. B) the amount of carbon assimilated for each water molecule transpired is only 25 percent of that in C3 plants. C) stomata open during the day. D) carboxylation and decarboxylation reactions occur in the same location at the same time. E) CO 2 is transported directly into mesophyll cells.