Cup-shaped chloroplast in present in

Options

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

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about the cup-shaped chloroplast. We need to identify which organism has this specific type of chloroplast.

2. **Understand Chloroplast Variability**: Chloroplasts can have different shapes depending on the type of algae. For example, in green algae, the structure of chloroplasts varies significantly.

3. **Focus on Chlamydomonas**: Among the green algae, Chlamydomonas is noted for having a cup-shaped chloroplast. It is a unicellular green alga.

4. **Visualize the Structure**: The cup-shaped chloroplast in Chlamydomonas can be visualized as a structure that resembles a cup, which is distinctive compared to other shapes found in different algae.

5. **Compare with Other Algae**: To reinforce the answer, we can compare with other types of green algae:
- Spirogyra has spiral-shaped chloroplasts.
- Ulothrix has girdle-shaped or disc-shaped chloroplasts.

6. **Conclusion**: Therefore, the organism that possesses cup-shaped chloroplasts is Chlamydomonas.

**Final Answer**: Cup-shaped chloroplasts are present in Chlamydomonas.

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