The Question is from neet-botany plant-physiology , and it was created by the author NISHANTH

Question

The diffusion of water across a selectively permeable membrane is called:

NISHANTH · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Osmosis
 **Related Topics**: Diffusion, Selective Permeability, Cell Membranes, Tonicity
 **Prerequisites**: Understanding of diffusion and membrane properties.
## SOLUTION PATHWAY
**Given Information**:
  The question describes the movement of water.
  The movement is across a selectively permeable membrane.
**Method & Steps**:
 1. Define diffusion: Diffusion is the net movement of particles from a region of higher concentration to a region of lower concentration.
  Reasoning: Water molecules, like other molecules, can diffuse.
  Formula/Rule: None directly applicable here; this is a definitional question.
 2. Define selective permeability: A selectively permeable membrane allows certain substances to pass through but not others.
  Working: Cell membranes are selectively permeable, controlling what enters and exits the cell.
  Key Point:  This selectivity is crucial for maintaining cellular homeostasis.
 3. Define osmosis: Osmosis is the diffusion of water across a selectively permeable membrane from a region of higher water concentration (lower solute concentration) to a region of lower water concentration (higher solute concentration).
  Result: Osmosis perfectly describes the given scenario.
  Verification: The definition of osmosis directly matches the question's description.
 ## OPTION ANALYSIS
A :x: Active transport requires energy to move substances against their concentration gradient. Water movement in osmosis is passive.
B :x: Facilitated diffusion uses membrane proteins to help substances cross the membrane, but osmosis is the specific term for water diffusion across a selectively permeable membrane.
C ✓: Osmosis is the correct term for the diffusion of water across a selectively permeable membrane.
D :x: Plasmolysis is the shrinking of a cell due to water loss in a hypertonic solution; it's a consequence of osmosis, not the process itself.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing osmosis with diffusion: Remember osmosis is a *specific type* of diffusion concerning water.
  2.Misunderstanding selective permeability:  The membrane's selective nature is crucial to the osmosis process.
 **Quick Tips**:
  1.Think of water moving from high water concentration (low solute) to low water concentration (high solute).
  2.Osmosis is a passive process; it doesn't require energy.

NISHANTH · Answer

Active transport

NISHANTH · Answer

Facilitated diffusion

NISHANTH · Answer

The correct Option is "Osmosis"

NISHANTH · Answer

Plasmolysis

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