The elements of xylem tissue that store tannins are

Options

A. trachedis
B. vessels in abundance
C. xylem fibres
D. xylem parenchyma

Answer

To answer the question regarding which elements of xylem tissue store tannins, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Components of Xylem**:
- Xylem is a type of vascular tissue in plants responsible for the transport of water and minerals. It consists of several elements including tracheids, vessels, xylem fibers, and xylem parenchyma.

2. **Identify the Function of Each Element**:
- **Tracheids**: These are elongated cells that facilitate the conduction of water and minerals, primarily in pteridophytes and gymnosperms.
- **Vessels**: These are specialized cells in angiosperms that also conduct water and minerals.
- **Xylem Fibers**: These provide mechanical support and strength to the plant.
- **Xylem Parenchyma**: This is the living component of xylem tissue that has various functions including storage.

3. **Focus on Storage Function**:
- The question specifically asks about the storage of tannins. Tannins are secondary metabolites that can be stored in plant tissues.

4. **Determine Which Element Stores Tannins**:
- Among the options, xylem parenchyma is known to store various substances including reserve food materials like starch, resin, and importantly, tannins.

5. **Conclusion**:
- Therefore, the correct answer to the question is **xylem parenchyma**, as it is the element of xylem tissue that stores tannins.

### Final Answer:
The elements of xylem tissue that store tannins are **xylem parenchyma**.

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