Epithem is

Options

A. associated with guttation
B. a group of loosely arranged green parenchymatous cells
C. found over the tip of a petiole
D. all of the above .

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Epithem":**
- Epithem refers to a specific type of tissue in plants, particularly associated with the process of guttation.

2. **Defining Guttation:**
- Guttation is the process by which water is expelled from the plant, particularly through specialized structures. This occurs when the soil moisture is high and transpiration is low.

3. **Identifying the Structure:**
- Epithem consists of loosely arranged cells that are found at the tips of the leaf veins. These cells facilitate the loss of water from the plant.

4. **Analyzing the Options:**
- The question provides several statements about epithem:
- A. Associated with guttation.
- B. A group of loosely arranged green parenchymatous cells.
- C. Found over the tip of the petiole.

5. **Evaluating Each Statement:**
- **Statement A:** Correct. Epithem is indeed associated with guttation as it helps in the loss of water.
- **Statement B:** Incorrect. While epithem consists of loosely arranged cells, they are not specifically green parenchymatous cells.
- **Statement C:** Incorrect. Epithem is not found at the tip of the petiole; it is located at the ends of the leaf veins.

6. **Conclusion:**
- The only correct statement about epithem is that it is associated with guttation. Therefore, the answer is option A.

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