29Plant Structure TransportHard1 markWhich combination of changes for loading of sucrose into the phloem by companion cells is correct?AThe water potential inside companion cells is increased, because protons are actively transported from the companion cell cytoplasm into the cell wall.BThe water potential inside the companion cell is increased, because protons and sucrose are co-transported into the companion cell cytoplasm from the cell wall.CThe water potential inside the companion cells is decreased, because protons are actively transported from the companion cell cytoplasm into the cell wall.DThe water potential inside the companion cells is decreased, because protons and sucrose are co-transported into the companion cell cytoplasm from the cell wall.Grade answerSolutionGrading criteria