The chloroplast thylakoids are in the form of :

Options

A. interconnected sacs
B. interconnected tubules
C. independent discs
D. stacked discs

Explanation

**Step-by-Step Solution:**

1. **Understanding Chloroplasts**:
- Chloroplasts are organelles found in plant cells that are responsible for photosynthesis. They contain thylakoids, which are essential for the light-dependent reactions of photosynthesis.

2. **Identifying Thylakoids**:
- Thylakoids are membrane-bound compartments within chloroplasts. They consist of a thylakoid membrane and an internal space known as the thylakoid lumen.

3. **Structure of Thylakoids**:
- Thylakoids often arrange themselves in stacks, which are referred to as "grana" (singular: granum). Each granum typically consists of 10 to 20 thylakoids stacked together.

4. **Interconnection of Grana**:
- Grana are interconnected by structures called stromal thylakoids or intergranal thylakoids, which help in forming a single functional compartment for photosynthesis.

5. **Conclusion**:
- Based on the structure and arrangement of thylakoids, the correct answer to the question is that chloroplast thylakoids are in the form of "stacked discs" (grana).

**Final Answer**: The chloroplast thylakoids are in the form of stacked discs (grana).

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