Select the incorrect statement for vaculole

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It can occupy upto 90% of the volume

It is bound by a single membrane

It contains materials not useful for the cell

Tonoplast facilitates the transport of a number of ions and other materials along concentration gradients.

answer is B.

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Detailed Solution

Vacuole is covered by a unit membrane called tonoplast. It is selectively permeable having ion channels of carrier proteins and help in transport of materials against the concentration gradient. The sap contains variety of minerals, proteins, esters, alkaloids, tannins, water soluble pigments like anthocyanin and waste products. They play an important role in osmoregulation.

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