Which of the following cell types or structures is incorrectly paired with its meristematic tissue ?

Options

A. Epidermis-protoderm
B. Stele-procambium
C. Cortex-ground meristem
D. Secondary phloem-cork cambium

Explanation

To determine which cell type or structure is incorrectly paired with its corresponding meristematic tissue, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Option 1: Epidermis with Protoderm**
- The epidermis is the outermost layer of cells that covers the plant's surfaces (leaves, stems, roots).
- Protoderm is the primary meristem from which the epidermis is derived.
- **Conclusion**: This pairing is correct.

2. **Option 2: Steel with Procambium**
- The stele (or steel) refers to the central part of the root and stem that contains vascular tissues.
- Procambium is a meristematic tissue that gives rise to primary vascular tissues, including xylem and phloem.
- **Conclusion**: This pairing is also correct.

3. **Option 3: Cortex with Ground Meristem**
- The cortex is a region of unspecialized cells located between the epidermis and the vascular tissues.
- Ground meristem is the primary meristem that develops into ground tissues, including the cortex.
- **Conclusion**: This pairing is correct as well.

4. **Option 4: Secondary Phloem with Cork Cambium**
- Secondary phloem is produced by the vascular cambium during secondary growth, which increases the girth of the plant.
- Cork cambium is responsible for producing the outer protective layer (cork) and does not produce phloem.
- **Conclusion**: This pairing is incorrect.

### Final Answer:
The incorrectly paired option is **Option 4: Secondary Phloem with Cork Cambium**.

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