The Question is from neet-botany mineral-nutrition , and it was created by the author D VINOD

Question

Deficiency of which of the given sets of elements  causes necrosis?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [C]
## CONCEPT FRAMEWORK
	**Primary Concept**: Mineral deficiencies in plants and their associated symptoms.
	**Related Topics**: Plant physiology, Essential nutrients for plants, Symptomology of plant diseases.
	**Prerequisites**: Basic knowledge of plant nutrition and the roles of different minerals.
## SOLUTION PATHWAY
**Given Information**:
	* Question asks about the deficiency of a set of elements that cause necrosis.
	* Necrosis is defined as the death of plant cells or tissues.
**Method & Steps**:
	1. Recall the role of each listed element in plant growth and health.
		Reasoning: Understanding which elements are directly involved in cell structure, membrane integrity, and overall tissue health is crucial.
	2. Identify which set of elements, when deficient, are known to cause necrosis.
		Working:  Calcium (Ca), Magnesium (Mg), Copper (Cu), and Potassium (K) are all known to be essential for maintaining cell structure, membrane function, and overall plant health. Their deficiency can lead to tissue death.
	3. Eliminate options based on known roles of elements.
		Result: Elements such as Nitrogen (N), Sulfur (S), Molybdenum (Mo), Iron (Fe), and Zinc (Zn), while important for plant health, are not primarily associated with necrosis. 
 ## OPTION ANALYSIS
[A] :x: Nitrogen (N), Sulfur (S), and Iron (Fe) deficiencies cause other symptoms like chlorosis (yellowing) or stunted growth, not primarily necrosis.
[B] :x: Nitrogen (N), Sulfur (S), and Molybdenum (Mo) deficiencies cause other symptoms like chlorosis or stunted growth.
[C] ✓: Calcium (Ca), Magnesium (Mg), Copper (Cu), and Potassium (K) deficiencies are known to cause necrosis.
[D] :x: Zinc (Zn), Molybdenum (Mo), Iron (Fe), and Sulfur (S) deficiencies cause other symptoms like chlorosis or stunted growth.
 ## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing symptoms: Mistaking chlorosis (yellowing) or stunted growth for necrosis (tissue death). Focus on defining symptom.
		2. Memorizing without context: Not understanding the roles of the individual elements in plant physiology. Learn the function of each element.
	**Quick Tips**:
		1. Group essential elements based on their functions (e.g., structural components, enzyme cofactors).
		2. Use mnemonic devices to remember the symptoms associated with different deficiencies.

D VINOD · Answer

N, S and Fe

D VINOD · Answer

N, S and Mo

D VINOD · Answer

The correct Option is "Ca, Mg, Cu and K "

D VINOD · Answer

Zn, Mo, Fe, S

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