(B) The $Tonoplast$ is the single membrane that surrounds the vacuole in plant cells.It is a selectively permeable membrane that facilitates the trans

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(B) The $Tonoplast$ is the single membrane that surrounds the vacuole in plant cells.It is a selectively permeable membrane that facilitates the transport of ions and other materials against concentration gradients into the vacuole,thereby maintaining a higher concentration in the vacuole than in the cytoplasm.