The mesophytes are characterised by

Options

A. sunken stomata
B. absence of cuticle
C. well developed root-shoot systems
D. all of these

Answer

**Step-by-Step Solution:**

1. **Understanding Mesophytes**: Mesophytes are plants that thrive in environments with moderate moisture levels. They are not specifically adapted to extremely dry or extremely wet conditions.

2. **Analyzing the Options**:
- **Option 1: Sunken Stomata**: This feature is characteristic of xerophytes, which are adapted to dry environments. Therefore, this option does not apply to mesophytes.
- **Option 2: Absence of Cuticle**: The absence of a cuticle is typical of hydrophytes, which are aquatic plants. Mesophytes generally have a cuticle to prevent water loss, so this option is also incorrect.
- **Option 3: Well-Developed Root-Shoot System**: Mesophytes possess a well-developed root and shoot system to efficiently absorb water and nutrients from the soil, making this option a characteristic of mesophytes.
- **Option 4: All of These**: Since options 1 and 2 are incorrect, this option cannot be true.

3. **Conclusion**: The correct characteristic of mesophytes is their well-developed root-shoot system.

**Final Answer**: Mesophytes are characterized by a well-developed root-shoot system.

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