Epidermal tissue system does not include

Options

A. Trichomes and hairs
B. Guard cells and subsidiary cells
C. Cuticle layer and cutinised walls
D. Collenchyma and sclerenchyma

Answer

To answer the question "Epidermal tissue system does not include", we need to analyze the options provided and understand what constitutes the epidermal tissue system in plants.

### Step-by-Step Solution:

1. **Understand the Epidermal Tissue System**:
- The epidermal tissue system is the outermost layer of cells in plants. It serves several functions, including protection, gas exchange, and water retention.

2. **Identify Components of the Epidermal Tissue System**:
- The epidermal tissue system includes:
- **Cuticle**: A waxy layer that helps reduce water loss.
- **Epidermal Hairs (Trichomes)**: These can help in reducing water loss and protecting against herbivores.
- **Guard Cells**: These control the opening and closing of stomata for gas exchange.
- **Subsidiary Cells**: These are associated with guard cells and help in their functioning.

3. **Analyze the Given Options**:
- **Option 1**: Trichomes and hairs – These are part of the epidermal tissue system.
- **Option 2**: Guard cells and subsidiary cells – These are also part of the epidermal tissue system.
- **Option 3**: Cuticle layer and cutinized walls – These are components of the epidermal tissue system.
- **Option 4**: Colon chima and sclerion chima – These are types of ground tissue, not part of the epidermal tissue system.

4. **Select the Correct Answer**:
- Based on the analysis, the correct answer is **Option 4: Colon chima and sclerion chima**, as they do not belong to the epidermal tissue system.

### Final Answer:
The epidermal tissue system does not include **colon chima and sclerion chima**.

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