Select incorrect statement

Options

A. Ions are known to accumulate in cells, i.e. they may move (e.g., into the inner space) against concentration or ecp gradients.
B. The symplastic pathway, essentially, involves diffusion and bulk flow of water from cell to cell through spaces between cell wall polysaccharides.
C. The movement of ions is usually termed as flux. The movement into the cell is influx and the outward movement is efflux.
D. he ion channels are trans-membrane proteins that function as selective pores.

Explanation

To solve the question "Select the incorrect statement," we will analyze each option provided in the question based on the information from the video transcript.

### Step-by-Step Solution:

1. **Understanding the Statements**: We need to evaluate each statement regarding mineral nutrition in plants, particularly focusing on the movement of ions and the pathways involved (apoplastic and symplastic).

2. **Analyzing Statement A**:
- **Statement**: "Ions are known to accumulate in cells; they may move against concentration or ECP gradients."
- **Evaluation**: This statement is correct. Ions can accumulate inside cells and can move against concentration gradients through active transport mechanisms.

3. **Analyzing Statement B**:
- **Statement**: "The simplistic pathway essentially involves diffusion and bulk flow of water from cell to cell through the space between cell wall polysaccharide."
- **Evaluation**: This statement is incorrect. The symplastic pathway involves the movement of water and solutes through the cytoplasm and plasmodesmata, not through the space between cell walls. The described process is characteristic of the apoplastic pathway.

4. **Analyzing Statement C**:
- **Statement**: "The movement of ions is usually termed as flux."
- **Evaluation**: This statement is correct. The movement of ions into and out of cells is referred to as flux, with influx indicating movement into the cell and efflux indicating movement out of the cell.

5. **Analyzing Statement D**:
- **Statement**: "The ion channels are transmembrane proteins that function as a selective pore."
- **Evaluation**: This statement is correct. Ion channels are indeed transmembrane proteins that allow selective passage of ions across the cell membrane.

6. **Conclusion**: Based on the evaluations, the incorrect statement is **Statement B**.

### Final Answer:
The incorrect statement is **Option B**: "The simplistic pathway essentially involves diffusion and bulk flow of water from cell to cell through the space between cell wall polysaccharide."

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