Root hairs are more in number in

Options

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

Answer

**Step-by-Step Text Solution:**

1. **Understanding Root Hairs:**
- Root hairs are tiny extensions of root cells that increase the surface area for water and nutrient absorption from the soil.

2. **Identifying Plant Types:**
- The question provides four types of plants: hydrophytes, xerophytes, mesophytes, and lithophytes.
- Hydrophytes are plants that thrive in aquatic environments.
- Xerophytes are plants adapted to dry habitats with scarce water.
- Mesophytes are plants that require moderate water availability.
- Lithophytes are plants that grow on rocks.

3. **Analyzing Xerophytes:**
- Xerophytes have adapted to survive in environments where water is limited.
- To compensate for the lack of water, xerophytes develop extensive root systems.

4. **Root Structure in Xerophytes:**
- Xerophytes typically have long tap roots that can reach deeper into the soil to access water.
- The root hairs in xerophytes are more numerous and well-developed to maximize water absorption.

5. **Conclusion:**
- Given that root hairs are crucial for water absorption and xerophytes are adapted to dry conditions, it follows that they would have a greater number of root hairs compared to hydrophytes, mesophytes, or lithophytes.

6. **Final Answer:**
- Therefore, the correct answer is **xerophytes** (Option B).

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