Cuticle is absent in

Options

A. Monocot leaf epidermis
B. Dicot leaf epidermis
C. Stem epidermis
D. Root epidermis

Answer

### Step-by-Step Solution:

1. **Understanding Cuticle**: The cuticle is a protective layer that covers the surfaces of aerial organs in plants. It is primarily composed of a waxy substance known as cutin.

2. **Identifying the Function of Cuticle**: The cuticle serves to reduce water loss and protect the plant from environmental factors. It is typically found on leaves and stems, which are aerial parts of the plant.

3. **Analyzing the Options**:
- **Option 1: Monocot Leaf Epidermis**: Leaves are aerial organs, and therefore, they have a cuticle. This option is incorrect.
- **Option 2: Dicot Leaf Epidermis**: Similar to monocots, dicot leaves are also aerial organs and possess a cuticle. This option is incorrect.
- **Option 3: Stem Epidermis**: Stems are also aerial organs and have a cuticle layer. This option is incorrect.
- **Option 4: Root Epidermis**: Roots are underground organs and do not require a cuticle for protection against water loss. Therefore, this option is correct.

4. **Conclusion**: The cuticle is absent in the root epidermis, making it the correct answer to the question.

### Final Answer:
The cuticle is absent in the root epidermis.

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