Plasmodesmata are:-

Options

A. Pores in cell wall
B. Pores in cell membrane
C. Protoplasmic connections
D. A and B both

Answer

**Step-by-Step Solution:**

1. **Understanding Plasmodesmata:**
- Plasmodesmata are microscopic channels that traverse the cell walls of plant cells.
- They facilitate communication and transport between adjacent plant cells.

2. **Analyzing the Options:**
- **Option 1: Pores in cell wall**
- This option suggests that plasmodesmata are simply pores in the cell wall. However, plasmodesmata are more than just pores; they are specialized structures that connect the cytoplasm of adjacent cells.
- **Conclusion:** This option is incorrect.

- **Option 2: Pores in cell membrane**
- This option states that plasmodesmata are pores in the cell membrane. This is inaccurate because plasmodesmata are not located in the cell membrane but rather in the cell wall.
- **Conclusion:** This option is also incorrect.

- **Option 3: Protoplasmic connection**
- This option correctly describes plasmodesmata as protoplasmic connections between adjacent cells. They allow for the exchange of materials and signals, enabling communication and transport.
- **Conclusion:** This option is correct.

- **Option 4: A and B both**
- Since both options A and B are incorrect, this option cannot be correct either.
- **Conclusion:** This option is incorrect.

3. **Final Answer:**
- The correct answer is **Option 3: Protoplasmic connection**.