Spiral shaped chloroplast is found in which of the following algae?

Options

A. Spirogyra
B. Chlamydomonas
C. Oedogonium
D. Ulothrix

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which type of algae has spiral-shaped chloroplasts. We need to identify the correct option from the given choices: Spirogyra, Chlamydomonas, Hedogonium, and Lothrix.

2. **Identifying Types of Algae**: Algae can be classified into different groups. The main groups include Chlorophyceae (green algae), Pheophyceae (brown algae), and Rhodophyceae (red algae). Since we are looking for green algae, we will focus on the Chlorophyceae group.

3. **Characteristics of Chloroplasts**: In green algae (Chlorophyceae), chloroplasts can have various shapes, such as discoid, plate-like, cup-shaped, and spiral or ribbon-shaped.

4. **Identifying the Correct Alga**: Among the options provided:
- **Spirogyra** is known for its distinctive spiral-shaped chloroplasts.
- **Chlamydomonas** typically has discoid chloroplasts.
- **Hedogonium** has filamentous structures but does not have spiral chloroplasts.
- **Lothrix** is also not known for spiral chloroplasts.

5. **Conclusion**: Based on the characteristics of the chloroplasts and the classification of algae, the correct answer is **Spirogyra**, as it is specifically known for its spiral-shaped chloroplasts.

**Final Answer**: Spirogyra

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