56. A protoplast is a cell: A Without plasma membrane B Without nucleus C Undergoing division D Without cell wall
Option D. Protoplasts are cells with the plasma membrane, cytoplasm and nucleus, which have had their cell wall removed by the action of enzymes. Cellulase enzymes digest the cellulose in plant cell walls while pectinase enzymes break down the pectin holding cells together. Once the cell wall has been removed the resulting protoplast is spherical in shape.
