Which of the following is the part of apoplast?

Options

A. Cell wall
B. Plasma membrane
C. Plasmodesmata
D. Cytoplasm

Answer

To determine which of the following is part of the apoplast, we need to understand the definitions and components of the apoplast and symplast pathways in plant transport.

### Step-by-Step Solution:

1. **Understanding Apoplast and Symplast**:
- The apoplast refers to the non-living parts of the plant where water and solutes can move freely. This includes the cell walls and the spaces between cells.
- The symplast, on the other hand, consists of the living parts of the plant, which includes the cytoplasm of the cells connected by plasmodesmata.

2. **Analyzing the Options**:
- **Option 1: Cell Wall**: The cell wall is a part of the apoplast as it is a non-living structure that allows for the movement of water and solutes.
- **Option 2: Plasma Membrane**: The plasma membrane is part of the living cell and is involved in the symplastic pathway, not the apoplast.
- **Option 3: Plasmodesmata**: Plasmodesmata are channels between plant cells that facilitate symplastic transport, thus not part of the apoplast.
- **Option 4: Cytoplasm**: The cytoplasm is also part of the living cell and is involved in the symplastic pathway.

3. **Conclusion**:
- Based on the definitions and analysis of the options, the correct answer is **Option 1: Cell Wall**, as it is the only part that belongs to the apoplast.

### Final Answer:
The part of the apoplast is the **Cell Wall**.