The Question is from neet-botany mineral-nutrition essential-elements, and it was created by the author Mr. NARESH KUMAR K

Question

Which pair of elements are predominantly found in older leaves due to their immobility within the plant?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [Option Letter: C]
## CONCEPT FRAMEWORK
	**Primary Concept**: Nutrient mobility in plants
	**Related Topics**: Plant physiology, Leaf nutrient content
	**Prerequisites**: Understanding of essential nutrients and their mobility in plants
## SOLUTION PATHWAY
**Given Information**:
		- The nutrients in question are being assessed based on their mobility within the plant.
		- Older leaves typically retain nutrients that are not easily translocated.
**Method & Steps**:
	1. Identify the immobile nutrients typically found in plants.
		Reasoning: Some nutrients are not readily moved from older leaves to younger parts of the plant.
		Formula/Rule: Nutrient mobility classification (mobile vs. immobile).
	2. Analyze the options provided for immobile nutrient pairs.
		Working: 
		- **Nitrogen** and **Potassium** are mobile; they are often relocated to younger leaves.
		- **Magnesium** and **Phosphorus** are also mobile to some extent.
		- **Calcium** is generally immobile and accumulates in older leaves.
		- **Iron** and **Manganese** are also considered immobile, but less commonly focused on than Calcium.
	3. Conclude with the correct option based on immobility.
		Result: The correct answer is Calcium and Boron, as they are predominantly found in older leaves due to their immobility.
		Verification: Research supports that Calcium is essential for cell wall structure and is not easily translocated within the plant.
 ## OPTION ANALYSIS
[A] :x: Nitrogen and Potassium are mobile nutrients that are translocated from older to younger leaves.
[B] :x: Magnesium and Phosphorus are generally mobile within the plant and are not predominantly found in older leaves.
[C] ✓: Calcium and Boron are typically found in older leaves due to their immobility and retention.
[D] :x: Iron and Manganese are less mobile but not as commonly associated with older leaves as Calcium.
 ## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing mobile and immobile nutrients: Always remember mobile nutrients can be relocated, while immobile ones cannot.
		2. Overlooking the role of specific nutrients in plant physiology: Each nutrient has distinct characteristics that affect its mobility.
	**Quick Tips**:
		1. Use mnemonic devices to remember which nutrients are mobile (e.g., N, P, K are often mobile).
		2. Create flashcards for essential nutrients detailing their mobility and roles in plants.

Mr. NARESH KUMAR K · Answer

Nitrogen and Potassium

Mr. NARESH KUMAR K · Answer

Magnesium and Phosphorus

Mr. NARESH KUMAR K · Answer

The correct Option is "Calcium and Boron"

Mr. NARESH KUMAR K · Answer

Iron and Manganese

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