Question

Membrane boundary of the vacuole of plant cells is known as………?

Answer 1

Cytoplasmic membrane which separates the vacuolar contents from the cytoplasm in a cell. The proton pumps at the direct the turgor pressure in collaboration with auxiliary dynamic transporters, so water influx into the vacuole is constrained by the organized activity of different carriers.

Complete solution:
The vacuole is bound by a single membrane-like structure called Tonoplast which is a single membrane that binds the vacuoles and separates them from the cytoplasm. (Function of Tonoplast) In plants, tonoplasts facilitate the uphill transport of many ions and other materials, making their concentration higher in vacuole than in the cytoplasm.

Additional information:
As a membrane, it is mainly involved in regulating the movements of ions around the cell, and insulating materials that might be harmful or a threat to the cell. Tonoplast is also known as the central vacuole, its main function is to maintain turgor pressure inside of the plant. Turgor pressure helps in keeping the shape of the plant by pressing the plasma membrane against the cell wall.
Tonoplast protects the cell. It separates the contents of the vacuole from the cell's cytoplasm. It is a semi-permeable membrane that regulates the movement of ions in and out of the cell, thus maintaining which substance enters and which substance doesn't. It maintains the acidic nature of the vacuole. It transports small amounts of salts and solutes with the help of numerous proteins found in the tonoplast.

So, the correct answer is 'Tonoplast’.

Note:
Toxins in vacuoles are stored from the rest of the cell, where they can be proved to be harmful. The high concentration of toxins in vacuoles allows them to function more efficiently within the cell. Thus it's essential as to why toxins are stored in vacuoles and not in cytosol.