Assertion (A): Tonoplast facilitates the transport of ions against concentration gradient
Reason (R) : Concentration of ions is significantly higher in the vacuole than cytoplasm

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Both A and R are true and R is the correct explanation of A

Both A and R are true and R is not the correct explanation of A

A is correct but R is not correct

A is not correct but R is correct

answer is A.

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Detailed Solution

The vacuole is bound by a single membrane called tonoplast.In plants, the tonoplast facilitates the transport of a number of ions and other materials against concentration gradients into the vacuole, hence their concentration is significantly higher in the vacuole than in the cytoplasm.

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