Grana in chloroplast is formed by the piling of

Options

A. Cristae
B. Thylakoids
C. Oxisomes
D. Dictyosomes

Answer

**Step-by-Step Solution:**

1. **Understanding Chloroplast Structure**:
- Chloroplasts are green-colored plastids found in plant cells that are responsible for photosynthesis. They have a double membrane structure consisting of an outer membrane and an inner membrane.

2. **Identifying the Components**:
- The space enclosed by the inner membrane is called the stroma. Within the stroma, there are structures known as grana.

3. **Defining Grana**:
- Grana are stacks of thylakoids. Each granum (singular of grana) is formed by the piling of these thylakoids.

4. **Understanding Thylakoids**:
- Thylakoids are disc-shaped, membranous sac-like structures that contain photosynthetic pigments. They are essential for the light reactions of photosynthesis.

5. **Conclusion**:
- Therefore, the correct answer to the question "Grana in chloroplast is formed by the piling of" is **thylakoids**.

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