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Vacuole in a plant cell is membrane bound and contains water and excretory substance. Vacuole is a space within the cytoplasm of living cell that is filled with air, water or other liquid, cell sap or food particles. In plant cells, there is usually one large vacuole bounded by a single layered membrane (tonoplast or vacuole membrane); animal cells usually have several small vacuoles.

1. Vacuole in a plant cell is membrane bound and contains water and excretory substance.
2. Vacuole is a space within the cytoplasm of living cell that is filled with air, water or other liquid, cell sap or food particles.
3. In plant cells, there is usually one large vacuole bounded by a single layered membrane (tonoplast or vacuole membrane).
4. Animal cells usually have several small vacuoles.

Correct answer: In plant cells, there is usually one large vacuole bounded by a single layered membrane (tonoplast or vacuole membrane).

Solution

The correct answer is the option that directly states the defining feature of a plant vacuole: one large central vacuole enclosed by the tonoplast. The other options are either broader definitions of vacuoles or describe animal cells instead.

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