Q. In the context of plant cell structure, what is the ‘tonoplast’?

[A] The outer rigid layer protecting the cell.

[B] The membrane that encloses the central vacuole and regulates ion transport.

[C] The structural framework of the mitochondria.

[D] The double-membrane surrounding the chloroplast.

Answer: B
Notes:

Explanation:

The tonoplast is the membrane of the vacuole. It is crucial for maintaining turgor pressure in the plant cell and for storing waste or nutrients.

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