Which one of the following pairs is not correctly matched

Options

A. Cristae " " The "Shelves" formed by the folding of the inner membrane of the mitochondrion
B. Plasmodesmata " "The membrane surrounding the vacuole in plants
C. Grann " " Membrane bound discs in chloroplasts that contain chlorophylls and carrotenoids
D. Middle lamella " " Layer between adjacent cell walls in plants derived from cell plate

Explanation

To determine which pair is not correctly matched, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the First Pair: Christae**
- Christae are the folds of the inner membrane of mitochondria.
- Mitochondria have a double membrane, and the inner membrane folds to form these structures.
- **Conclusion**: This pair is correctly matched.

2. **Identify the Second Pair: Plasmodesmata**
- Plasmodesmata are channels that connect plant cells, allowing for communication and transport of materials between them.
- The membrane that surrounds the vacuole in plant cells is called the Tonoplast, not Plasmodesmata.
- **Conclusion**: This pair is incorrectly matched.

3. **Identify the Third Pair: Grana**
- Grana are stacks of thylakoids found in chloroplasts, which contain chlorophyll and carotenoids.
- These structures are essential for photosynthesis.
- **Conclusion**: This pair is correctly matched.

4. **Identify the Fourth Pair: Middle Lamella**
- The middle lamella is a layer that forms between the cell walls of adjacent plant cells and is derived from the cell plate during cell division.
- **Conclusion**: This pair is correctly matched.

### Final Conclusion:
The only pair that is not correctly matched is **Plasmodesmata**, which is incorrectly paired with the function of surrounding the vacuole. The correct term for the membrane surrounding the vacuole is **Tonoplast**.

### Answer:
**Option B** is the incorrectly matched pair.

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