The Question is from neet-botany plant-physiology uptake-of-minerals-ion, and it was created by the author D VINOD

Question

Which of the following is NOT a passive process involved in the uptake of mineral ions by plants?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Mineral ion uptake in plants
 **Related Topics**: Passive transport, active transport, diffusion, mass flow, ion exchange
 **Prerequisites**: Understanding of plant physiology, membrane transport mechanisms.
## SOLUTION PATHWAY
**Given Information**:
The question asks to identify the process that is NOT a passive method of mineral ion uptake in plants.
**Method & Steps**:
1. **Identify passive transport processes:** Passive transport processes do not require energy expenditure by the plant. They rely on the existing concentration or pressure gradients.
  Reasoning: Diffusion, mass flow, and ion exchange are all driven by physical forces and do not directly require energy input from the plant.
  Formula/Rule:  No specific formula is needed for this question, but understanding the principles of diffusion ($J = -D \frac{dc}{dx}$ where J is flux, D is diffusion coefficient, c is concentration and x is distance) and mass flow is helpful.
2. **Identify active transport:** Active transport requires energy (usually ATP) to move ions against their concentration gradient (from low to high concentration).
  Working: Active transport is the only process listed that requires energy input from the plant to move ions against their concentration gradient.
  Key Point:  The direction of ion movement is crucial. Passive processes move ions down their concentration gradient, while active transport moves them against it.
3. **Determine the non-passive process:** Based on the definitions, active transport is the only process that is not passive.
  Result: Active transport is NOT a passive process involved in the uptake of mineral ions by plants.
  Verification: Review the definitions of each process to confirm that active transport requires energy expenditure, unlike the other options.
 ## OPTION ANALYSIS
A : ✓: Diffusion is a passive process where ions move from a region of high concentration to a region of low concentration.
B : ✓: Mass flow is a passive process where ions are carried along with the movement of water in the xylem.
C : ✓: Ion exchange is a passive process where ions are exchanged between the soil and the root surface.
D : x: Active transport is an energy-requiring process where ions are moved against their concentration gradient.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing passive and active transport: Remembering that passive transport does not require energy is key.
  2.Overlooking the direction of ion movement:  Ions moving against their concentration gradient always indicate active transport.
 **Quick Tips**:
  1.If a process requires ATP, it's active transport.
  2.Passive transport follows concentration gradients.

D VINOD · Answer

Diffusion

D VINOD · Answer

Mass flow

D VINOD · Answer

Ion exchange

D VINOD · Answer

The correct Option is "Active transport"

NEET Botany Transport in Plants Uptake Of Minerals Ion MCQs

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