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Q.

Choose the incorrect statement.

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a

Minerals are present in the soil as charged particles (ions).

b

Unloading of mineral ions occurring at vein endings is strictly through diffusion.

c

Girdling experiment was used to identify the tissues involved in long distance transport of food materials.

d

Active uptake of ions is partly responsible for the water potential gradient in roots.

answer is B.

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Detailed Solution

Unloading of mineral ions occurs at the fine vein endings through diffusion and active uptake by living cells.

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