Mechanical tissue is best developed in

Options

A. Hydrophytes
B. Halophytes
C. Xerophytes
D. Mesophytes.

Answer

**Step-by-Step Solution:**

1. **Understanding Mechanical Tissue**: Mechanical tissue in plants provides structural support and helps them withstand various environmental stresses. It includes tissues such as sclerenchyma and collenchyma.

2. **Identifying Plant Types**: The question provides four types of plants:
- **Hydrophytes**: Plants that grow in water.
- **Halophytes**: Plants that can tolerate high salt concentrations.
- **Xerophytes**: Plants adapted to dry environments.
- **Mesophytes**: Plants that thrive in moderate water conditions.

3. **Analyzing Xerophytes**: Xerophytes are specifically adapted to survive in arid conditions. They have developed various structural adaptations, including well-developed mechanical tissues to support their structure and retain water.

4. **Comparing Other Plant Types**:
- **Hydrophytes**: These plants have less mechanical tissue because they need to be flexible to avoid resistance from water currents.
- **Halophytes**: While they have adaptations to deal with salt, they do not necessarily have the most developed mechanical tissues.
- **Mesophytes**: These plants have a moderate amount of water but do not need extensive mechanical support compared to xerophytes.

5. **Conclusion**: Based on the analysis, the mechanical tissue is best developed in xerophytes, as they require strong structural support to survive in dry conditions.

**Final Answer**: The mechanical tissue is best developed in **xerophytes**.

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