What is the main function of the cell membrane and the tonoplast in plant cells?

What is the main function of the cell membrane and the tonoplast in plant cells?
  1. To act as a barrier to movement
  2. To determine the movement of molecules in or out of the cell
  3. To maintain the solute potential of the cell
  4. To store the central vacuole contents

Solution

The cell membrane and the tonoplast (membrane of the vacuole) together are important determinants of movement of molecules in or out of the cell.

Asked in: NCERT

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