Question

What is a tonoplast?

• A. Outer membrane of mitochondria
• B. Membrane boundary of the vacuole of plant cells
• C. Cell membrane of a plant cell
• D. Inner membrane of chloroplast

Answer 1

The correct option is B Membrane boundary of the vacuole of plant cells

Tonoplast

The vacuole, found in the cytoplasm, prominent in the plant cells, is bound by a single membrane called tonoplast. Tonoplasts have special ion pumps and transporters that facilitate uphill transport of many ions and other materials, making their concentration higher in vacuole as compared to the cytoplasm.


Final answer: c) Membrane boundary of the vacuole of plant cells