Select an incorrect statement regarding dermatogens

Options

A. This is the single, outermost layer of cells.
B. These divide and give rise to the skin layer (epidermis) of the stem.
C. In roots, the cells of the dermatogen form a mass of tissue called calyptrogens
D. The calyptrogen is not meristematic and gives rise to the root cap

Explanation

To solve the question regarding dermatogens and select the incorrect statement, we can follow these steps:

### Step-by-Step Solution:

1. **Define Dermatogen**:
- Dermatogen is the outer primary meristem of a plant that gives rise to the epidermis, which is the outermost layer of cells in the plant.

2. **Identify the Role of Dermatogen**:
- Dermatogen is responsible for forming the epidermis in stems and leaves. In roots, it forms a mass of tissue known as caliprogen.

3. **Understand Caliprogen**:
- Caliprogen is derived from dermatogen in roots and is a meristematic tissue that contributes to the formation of the root cap.

4. **Analyze the Statements**:
- **Statement 1**: "This is a single outermost layer of the cell."
- This statement is correct as dermatogen is indeed the outermost layer.
- **Statement 2**: "These divide and give rise to the skin layer i.e. epidermis of the stem."
- This statement is also correct since dermatogen does give rise to the epidermis.
- **Statement 3**: "In roots, the cells of the Dermatogen form a mass of tissue called Caliprogen."
- This statement is correct as dermatogen forms caliprogen in roots.
- **Statement 4**: "The Caliprogen is not meristematic and it gives rise to the root cap."
- This statement is incorrect because caliprogen is indeed meristematic and does give rise to the root cap.

5. **Select the Incorrect Statement**:
- Based on the analysis, the incorrect statement is **Statement 4**.

### Final Answer:
The incorrect statement regarding dermatogens is: **"The Caliprogen is not meristematic and it gives rise to the root cap."**

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