Which of the following statements is correct regarding protective tissue, epidermis?

Options

A. In desert plants, epidermis has a waxy coating of cutin on its outer surface to reduce transpiration.
B. The epidermis of the leaf contains small pores called stomata that help in the exchange of gases.
C. The epidermis of the root contains long hair-like structures that help to increase surface area for absorption of water.
D. All of these

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the correct statements regarding the protective tissue known as the epidermis.

2. **Evaluating the First Statement**:
- The first statement mentions that in desert plants, the epidermis has a waxing coating of cuticle on its outer surface to reduce transpiration.
- This statement is correct because the cuticle helps prevent water loss, which is crucial for plants in arid environments.

3. **Evaluating the Second Statement**:
- The second statement states that the epidermis of the leaf contains small pores called stomata that help in the exchange of gases.
- This statement is also correct, as stomata are essential for gas exchange, allowing carbon dioxide to enter and oxygen to exit during photosynthesis.

4. **Evaluating the Third Statement**:
- The third statement claims that the epidermis of the root contains long hair-like structures that help to increase the surface area for the absorption of water.
- This statement is correct as well, since root hairs increase the surface area, facilitating more efficient water and nutrient absorption.

5. **Conclusion**:
- All three statements regarding the epidermis are correct. Therefore, the answer to the question is that all of the statements provided are correct regarding the protective tissue, epidermis.