The tonoplast of a plant cell loses its ability to transport substances against their concentration gradients. Which cha
The tonoplast transports several ions and other materials into the vacuole against concentration gradients. Loss of this function would prevent the vacuole from maintaining concentrations significantly higher than those in the cytoplasm.
Ref: NCERT Class 11 Biology Chapter 8: Cell: The Unit of Life Mitochondria Plastids Ribosomes and Other Organelles