Question:
Which one of the following elements is relatively immobile in plants?
Which one of the following elements is relatively immobile in plants?
Show Hint
Immobile elements are not moved out of old leaves.
Updated On: Nov 12, 2026
- Sulphur
- Nitrogen
- Magnesium
- Potassium
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
Mobile elements such as nitrogen, phosphorus, potassium and magnesium are transported from old leaves to young growing parts. Their deficiency shows first in older leaves.
Step 2: Immobile elements
Elements built into structural compounds, such as sulphur and calcium, are not remobilised from mature tissue. Their deficiency shows first in young leaves.
Step 3: Conclusion
Among the options, sulphur is the relatively immobile element.
Final Answer:
Sulphur is relatively immobile. \[ \boxed{\text{(A) }\text{Sulphur}} \]
Mobile elements such as nitrogen, phosphorus, potassium and magnesium are transported from old leaves to young growing parts. Their deficiency shows first in older leaves.
Step 2: Immobile elements
Elements built into structural compounds, such as sulphur and calcium, are not remobilised from mature tissue. Their deficiency shows first in young leaves.
Step 3: Conclusion
Among the options, sulphur is the relatively immobile element.
Final Answer:
Sulphur is relatively immobile. \[ \boxed{\text{(A) }\text{Sulphur}} \]
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