Chloroplast in Ulothrix is

Options

A. Stellate
B. Laminate
C. Ribbon-shaped and spirally coiled
D. Girdle-shaped.

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks about the shape of chloroplasts in the organism Ulothrix.

2. **Identifying the Options**: The provided options are:
- Stellate
- Laminate
- Ribbon shaped
- Spirally coiled
- Girdle shaped

3. **Analyzing Chloroplast Structure in Ulothrix**: In Ulothrix, the chloroplast is known to have a specific shape. It is described as a ring that runs around the circumference of the cell.

4. **Describing the Chloroplast**: The chloroplast in Ulothrix is characterized as:
- Girdle-like, meaning it encircles the cell.
- Parietal, which indicates that it is located against the cell wall.
- It occupies almost the entire length of the cell.

5. **Presence of Pyrenoids**: Each chloroplast in Ulothrix contains two to many pyrenoids, which are structures involved in starch storage.

6. **Conclusion**: Based on the analysis, the correct answer to the question is that the chloroplast in Ulothrix is **girdle shaped**.

**Final Answer**: Girdle shaped.

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