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

Question

A researcher observes that a particular plant species exhibits significantly reduced root hair development when grown in a hydroponic solution lacking phosphorus.  Which physiological role of phosphorus in root hair formation is MOST likely affected?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [C]
## CONCEPT FRAMEWORK
	**Primary Concept**: Role of phosphorus in plant physiology
	**Related Topics**: Nutrient deficiencies, root development, plant growth
	**Prerequisites**: Understanding of plant nutrient roles and physiological processes
## SOLUTION PATHWAY
**Given Information**:
		- Plant species shows reduced root hair development
		- Hydroponic solution is lacking phosphorus
**Method & Steps**:
	1. Identify the physiological roles of phosphorus in plants.
		Reasoning: Phosphorus is crucial for several cellular processes, especially in growth and development.
	2. Analyze the options given in the question to find the most relevant role of phosphorus.
		Working: 
		- Option A: Cell wall cellulose is primarily made of carbohydrates, not phosphorus.
		- Option B: Lignin biosynthesis involves other factors but not primarily phosphorus.
		- Option C: Nucleic acids require phosphorus for DNA and RNA synthesis, and energy transfer through ATP, which is vital for cell division and elongation.
		- Option D: Stomatal regulation is not directly impacted by phosphorus.
	3. Conclude that the most affected role due to phosphorus deficiency is related to nucleic acid synthesis and energy transfer, which are critical for root hair formation.
		Result: C
		Verification: Nucleic acids and energy transfer are essential for growth processes.
 ## OPTION ANALYSIS
[A] :x: Cell wall cellulose is not directly related to phosphorus.
[B] :x: While lignin synthesis is important, it is not the primary role of phosphorus.
[C] ✓: Phosphorus is crucial for nucleic acid synthesis and ATP production, affecting root hair development.
[D] :x: Phosphorus does not primarily regulate stomatal closure.
 ## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing the roles of different nutrients: Always remember the specific functions of nutrients in plant biology.
		2. Overlooking the significance of energy transfer in growth processes: Energy transfer is fundamental to all cellular activities.
	**Quick Tips**:
		1. Remember: Phosphorus = Energy + Nucleic Acids + Growth.
		2. Use mnemonic devices to recall nutrient functions: "P for Power (energy) and DNA" for phosphorus.

D VINOD · Answer

Major component of cell wall cellulose

D VINOD · Answer

Cofactor for enzymes involved in lignin biosynthesis

D VINOD · Answer

The correct Option is "Nucleic acid synthesis and energy transfer for cell division and elongation"

D VINOD · Answer

Regulation of stomatal closure to prevent water loss

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