Question:
Which mineral ion is NOT readily remobilized ?
Which mineral ion is NOT readily remobilized ?
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Calcium is fixed in cell walls as calcium pectate and cannot be moved again.
Updated On: Nov 12, 2026
- Phosphorus
- Sulphur
- Calcium
- Nitrogen
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
Mobile elements such as nitrogen, phosphorus and sulphur move from old leaves to young parts when they are scarce.
Step 2: Calcium
Calcium is deposited as calcium pectate in the middle lamella of cell walls.
Once fixed there, it cannot be withdrawn and moved again.
Step 3: Effect
So calcium deficiency shows first in young leaves and growing tips.
Final Answer:
Calcium is not readily remobilised. \[ \boxed{\text{(C) }\text{Calcium}} \]
Mobile elements such as nitrogen, phosphorus and sulphur move from old leaves to young parts when they are scarce.
Step 2: Calcium
Calcium is deposited as calcium pectate in the middle lamella of cell walls.
Once fixed there, it cannot be withdrawn and moved again.
Step 3: Effect
So calcium deficiency shows first in young leaves and growing tips.
Final Answer:
Calcium is not readily remobilised. \[ \boxed{\text{(C) }\text{Calcium}} \]
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