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Question

What is tonoplast?

A
Outer membrane of mitochondria
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B
Inner membrane of chloroplast
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C
Membrane boundry of the vacuole of plant cells
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D
Cell membrane of a plant cell
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Solution

The correct option is C Membrane boundry of the vacuole of plant cells
Tonoplast is a single membrane that bounds the vacuoles and separates it from cytoplasm. In plants, tonoplasts facilitate uphill transport of many ions and other materials, making their concentration higher in vacuole than cytoplasm. So, the correct answer is 'Membrane boundry of the vacuole of plant cells'.

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