Select incorrect for apoplastic system of pathways.

Options

A. (A) This movement is dependent on the gradient
B. (B) apoplastic movement may be aided by cytoplasmic streaming.
C. (C) apoplast does not provide any barrier to water movement and water movement is through mass flow.
D. (D) mass flow of water occurs due to the adhesive and cohesive properties of water.

Answer

To solve the question regarding the incorrect statement for the apoplastic system of pathways, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Apoplastic Pathway**:
- The apoplastic pathway is one of the two main pathways for water absorption in plants, specifically through the root system. It involves the movement of water through the intercellular spaces and cell walls, bypassing the cell membranes.

2. **Identify Key Characteristics**:
- Water moves through interstitial spaces without crossing any cell membranes, making this pathway faster than the symplastic pathway.
- The movement of water occurs due to a gradient, where water moves from areas of higher concentration to areas of lower concentration.

3. **Differentiate Between Apoplastic and Symplastic Pathways**:
- The apoplastic pathway does not involve cytoplasmic streaming, which is a feature of the symplastic pathway where water moves through the cytoplasm of cells connected by plasmodesmata.

4. **Analyze the Given Statements**:
- **Statement 1**: "The movement is dependent on the gradient." - This is **correct**.
- **Statement 2**: "Apoplastic movement may be aided by cytoplasmic streaming." - This is **incorrect** because apoplastic movement does not involve cytoplasmic streaming.
- **Statement 3**: "Apoplast does not provide any barrier to water movement and water movement is through mass flow." - This is **correct**.
- **Statement 4**: "Mass flow of water occurs due to the adhesive and cohesive properties of water." - This is **correct**.

5. **Select the Incorrect Statement**:
- Based on the analysis, the incorrect statement is **Statement 2**: "Apoplastic movement may be aided by cytoplasmic streaming."

### Final Answer:
The incorrect statement for the apoplastic system of pathways is: **"Apoplastic movement may be aided by cytoplasmic streaming."**

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