The osmotic expansion of cell kept in water is chiefly regulated by :

Options

A. mitochondria
B. vacuoles
C. plastids
D. ribosomes

Answer

B

Explanation

the osmotic expansion of a cell kept in water is chiefly regulated by vacuole. It is the single and large organelle which constitutes about 20% of plant cells and is small and multiple in animal cells. Vacuole stores water and macromolecules including ions, sugar, amino acids, proteins and carbbohydrates. the membrane that surrounds the vacuole is called tonoplast. the vacuole contains ell sap in it. the cell sap has high osmotic pressure which generates turgor pressure in plant cells.