The chief water conducting elements of xylem in gymnosperms are

Options

A. vessels
B. fibres
C. transfusion tissues
D. tracheids

Answer

To answer the question, "The chief water conducting elements of xylem in gymnosperms are," follow these steps:

### Step-by-Step Solution:

1. **Understand the Components of Xylem**:
- Xylem is a complex tissue responsible for the conduction of water and minerals in plants. It consists of several types of cells, including vessels, tracheids, fibers, and parenchyma.

2. **Identify the Main Functions of Xylem Components**:
- **Vessels**: These are long cylindrical cells that help in transporting water and minerals. However, vessels are primarily found in angiosperms, not gymnosperms.
- **Tracheids**: These are tubular cells with tapered ends and are responsible for the conduction of water in gymnosperms. They also have lignified walls, which help in water transport.
- **Fibers**: These provide mechanical support to the plant but do not conduct water.
- **Parenchyma**: This tissue is involved in the storage of water, minerals, and carbohydrates, rather than in conduction.

3. **Focus on Gymnosperms**:
- In gymnosperms, the primary water-conducting elements are not vessels but tracheids. This is a key distinction since gymnosperms primarily rely on tracheids for water transport.

4. **Conclusion**:
- Based on the information about the components of xylem and their functions, the chief water conducting elements of xylem in gymnosperms are **tracheids**.

### Final Answer:
The chief water conducting elements of xylem in gymnosperms are **tracheids**.

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