Stack of lamellae found inside a plastid is

Options

A. thylakoid
B. stroma
C. granum
D. oxysome

Answer

To solve the question "Stack of lamellae found inside a plastid is," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Components of Plastids**: Understand that plastids are organelles found in plant cells and some algae, and they include structures such as chloroplasts, which are involved in photosynthesis.

2. **Understand Thylakoids**: Recognize that thylakoids are membrane-bound compartments inside chloroplasts. They are organized into stacks and are crucial for the light-dependent reactions of photosynthesis.

3. **Define Granum**: A granum (plural: grana) is the term used to describe a stack of thylakoids. Each granum consists of multiple thylakoid discs stacked together.

4. **Consider Other Options**: Review the other options given in the question:
- **Stroma**: This is the fluid-filled space surrounding the thylakoids in chloroplasts, but it is not a stack of lamellae.
- **Auxosome**: This is not a relevant term in the context of plastids.
- **Thylakoid**: While this refers to the individual discs, the question specifically asks for a stack.

5. **Conclusion**: Since the question asks for a stack of thylakoids, the correct answer is **Granum**.

### Final Answer:
The stack of lamellae found inside a plastid is called **Granum**.

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