Which one of the following elements in plants is not remobilised?

Potassium

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Sulphur

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Phosphorus

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Calcium

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Solution

The correct option is D
Calcium

Calcium is an immobile element. It cannot be remobilised in plants, so its deficiency symptoms first appear in younger tissues rather than older ones. Phosphorus, potassium and sulphur are mobile elements. They can be remobilised in plants, so their deficiency symptoms first appear in older tissues.

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Elements such as calcium, potassium, and phosphorus, needed by the plant in fairly large amounts are called:

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