In green algae we meet which type of chloroplasts -

Options

A. Spiral and reticulate
B. Plate like and cup shaped
C. Discoid
D. All

Answer

**Step-by-Step Solution:**

1. **Understanding Green Algae**: Green algae are simple, thalloid organisms that contain chlorophyll and are primarily aquatic. They belong to the plant kingdom and are classified under the division Chlorophyta.

2. **Chlorophyll Presence**: Green algae contain chlorophyll pigments A and B, which are essential for photosynthesis. This allows them to convert light energy into chemical energy.

3. **Chloroplast Structure**: Chloroplasts are double-membrane-bound organelles found in all photosynthetic organisms, including algae. They are responsible for the process of photosynthesis.

4. **Types of Chloroplasts in Green Algae**: In green algae, chloroplasts can take on various shapes. The common types of chloroplast shapes found in green algae include:
- Discoid
- Plate-like
- Cup-shaped
- Spiral
- Reticulate
- Ribbon-shaped

5. **Presence of Pyrenoids**: Within the chloroplasts, there are structures called pyrenoids, which serve as storage bodies for proteins and starch.

6. **Conclusion**: Given that green algae can exhibit a variety of chloroplast shapes, the correct answer to the question is that green algae can have all types of chloroplasts mentioned: spiral, reticulate, plate-like, cup-shaped, and others.

**Final Answer**: In green algae, we meet all types of chloroplasts.

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