Chloroplast with many pyrenoids is the feature of

Options

A. Chlamydomonas
B. Sargassum
C. Batrachospermum
D. Spirogyra

Answer

To determine which algae has chloroplasts with many pyrenoids, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Pyrenoids**:
- Pyrenoids are specialized structures found within the chloroplasts of certain algae. They are involved in the synthesis and storage of starch.

2. **Identify the Options**:
- The options given are:
1. Chlamydomonas
2. Sargassum
3. Batrachospermum
4. Spirogyra

3. **Analyze Each Option**:
- **Chlamydomonas**: This is a green algae that contains pyrenoids, but not in large numbers. Therefore, it does not fit the criteria of having "many" pyrenoids.
- **Sargassum**: This is a brown algae. Brown algae generally do not contain pyrenoids, making this option incorrect.
- **Batrachospermum**: This is a red algae, and red algae typically do not have pyrenoids. Thus, this option is also incorrect.
- **Spirogyra**: This is a green algae known for having many pyrenoids within its chloroplasts. This option fits the criteria perfectly.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Spirogyra**, as it is the only option that has chloroplasts with many pyrenoids.

### Final Answer:
**Spirogyra** is the algae that has chloroplasts with many pyrenoids.

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