Velamen occurs in

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding Velamen**: Velamen is a specialized tissue found in the roots of certain plants. It is a spongy layer that helps in water absorption.

2. **Identifying the Plants with Velamen**: Velamen is primarily found in epiphytic plants. Epiphytes are plants that grow on other plants (usually trees) but do not take nutrients from them; they only use them for support.

3. **Examples of Epiphytes**: Common examples of epiphytic plants that possess velamen include orchids such as *Vanda* and *Dendrobium*. These plants have adapted to absorb moisture and nutrients from the air and rain.

4. **Characteristics of Roots with Velamen**: The roots of epiphytes are often aerial or hygroscopic, meaning they can absorb water from the atmosphere. These roots lack root caps and root hairs, and instead, they are covered by the velamen.

5. **Conclusion**: Therefore, velamen occurs in epiphytes. Other types of plants, such as mesophytes, hydrophytes, and xerophytes, do not possess this specialized tissue.

**Final Answer**: Velamen occurs in epiphytes.

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