Epidermis in stem is produced from

Options

A. Potoderm
B. Procambium
C. Ground meristem
D. Calyptrogen

Answer

### Step-by-Step Solution:

1. **Understanding the Epidermis**: The epidermis is the outermost layer of cells in the stem of a plant. It serves as a protective barrier against mechanical injury, water loss, and infection.

2. **Identifying the Source of Epidermis**: The epidermis in the stem is derived from a specific layer of cells known as the protoderm.

3. **Defining Protoderm**: Protoderm is a type of primary meristem. Meristems are regions of undifferentiated cells in plants that can divide and differentiate into various types of tissues. The protoderm specifically gives rise to the epidermis in stems and the epiblema in roots.

4. **Reviewing Other Options**:
- **Procambium**: This meristem gives rise to vascular tissues, specifically primary xylem and primary phloem, which are involved in the transport of water, nutrients, and food.
- **Ground Meristem**: This produces ground tissues such as parenchyma, collenchyma, and sclerenchyma, which are involved in storage, support, and photosynthesis.
- **Calyptrogen**: This is a layer of rapidly dividing cells at the tip of roots that forms the root cap, not the epidermis.

5. **Conclusion**: Based on the definitions and functions of the different types of meristems, the correct answer to the question "Epidermis in stem is produced from" is **protoderm**.

### Final Answer:
The epidermis in the stem is produced from **protoderm**.

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