Which of the following components of epidermal tissue system posses chloroplast?

Options

A. Trichomes
B. Guard cells
C. Subsidiary cells
D. Cuticle

Answer

To determine which components of the epidermal tissue system possess chloroplasts, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding the Components**: We need to identify the components of the epidermal tissue system mentioned in the question: trichomes, guard cells, subsidiary cells, and cuticle.

2. **Analyzing Trichomes**:
- Trichomes are hair-like structures that can be unicellular or multicellular.
- Their primary function is to prevent water loss from the plant.
- **Conclusion**: Trichomes do not contain chloroplasts.

3. **Analyzing Guard Cells**:
- Guard cells are specialized cells that surround the stomatal pores.
- They are responsible for regulating the opening and closing of the stomata.
- **Conclusion**: Guard cells do possess chloroplasts and can perform photosynthesis.

4. **Analyzing Subsidiary Cells**:
- Subsidiary cells are large epidermal cells that surround guard cells.
- They play an indirect role in the functioning of stomata.
- **Conclusion**: Subsidiary cells do not contain chloroplasts.

5. **Analyzing Cuticle**:
- The cuticle is a waxy layer that covers the plant surface.
- Its primary function is to reduce water loss.
- **Conclusion**: The cuticle does not contain chloroplasts.

6. **Final Conclusion**: Based on the analysis, the only component of the epidermal tissue system that possesses chloroplasts is the guard cells.

### Answer:
The correct option is **B. Guard Cells**.

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