Which one of the following is a well-developed tissue present in hydrophytes?

Options

A. Aerenchyma
B. Collenchyma
C. Stomata
D. Root system

Answer

To solve the question "Which one of the following is a well-developed tissue present in hydrophytes?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a well-developed tissue found in hydrophytes (aquatic plants). We need to analyze the options provided.

2. **List the Options**: The options given are:
- A) Ehrenkyma
- B) Collenchyma
- C) Stomata
- D) Root system

3. **Analyze Each Option**:
- **A) Ehrenkyma**: This is a type of parenchyma tissue that is specialized for gas exchange and buoyancy in aquatic plants. It contains air spaces that help in floating.
- **B) Collenchyma**: This tissue provides support and flexibility but is not specifically adapted for aquatic environments.
- **C) Stomata**: These are openings for gas exchange but are not a tissue; they are structures found on the surface of leaves.
- **D) Root System**: While roots are important for anchorage and nutrient uptake, they are not a tissue type.

4. **Identify the Correct Answer**: Among the options, Ehrenkyma is the only well-developed tissue specifically adapted for the aquatic environment of hydrophytes, providing buoyancy and facilitating gas exchange.

5. **Conclusion**: Therefore, the correct answer is **A) Ehrenkyma**.