Collenchyma occurs in the stem and petioles of

Options

A. xerophytes
B. monocots
C. dicot herbs
D. hydrophytes

Explanation

**Step-by-Step Solution:**

1. **Understanding Collenchyma:**
- Collenchyma is a type of plant tissue that provides support and flexibility to the plant. It is characterized by its elongated cells with unevenly thickened cell walls.

2. **Location of Collenchyma:**
- Collenchyma is primarily found in the stems and petioles (the stalk that attaches the leaf blade to the stem) of plants.

3. **Identifying Plant Types:**
- The question provides four options: xerophytes, monocots, dicots, and hydrophytes. We need to determine which type of plant typically contains collenchyma in its stems and petioles.

4. **Analyzing Each Option:**
- **Xerophytes:** These are plants adapted to dry environments. They typically have other types of supportive tissues rather than collenchyma.
- **Monocots:** These plants, such as grasses, generally do not have collenchyma in their stems and petioles.
- **Dicots:** These plants, including many herbs and climbing plants, commonly have collenchyma in their stems and petioles, especially in the hypodermis (just beneath the epidermis).
- **Hydrophytes:** These are aquatic plants and do not typically have collenchyma for support.

5. **Conclusion:**
- Based on the analysis, collenchyma is most commonly found in the stems and petioles of dicots. Therefore, the correct answer is **option 3: Dicot herbs**.

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