Chlorophyll in chloroplasts is located in –

Options

A. Grana
B. Pyrenoid
C. Stroma
D. Both grana and stroma

Answer

**Step-by-Step Solution:**

1. **Understanding Chlorophyll**: Chlorophyll is the green pigment found in plants that is essential for photosynthesis. It captures light energy, which is used to convert carbon dioxide and water into glucose and oxygen.

2. **Identifying the Location of Chlorophyll**: Chlorophyll is located within chloroplasts, which are the organelles responsible for photosynthesis in plant cells.

3. **Structure of Chloroplasts**: Chloroplasts consist of two main components:
- **Thylakoids**: These are membrane-bound structures where the light-dependent reactions of photosynthesis occur. Thylakoids can be stacked to form structures called grana.
- **Stroma**: This is the fluid-filled space surrounding the thylakoids, where the light-independent reactions (Calvin cycle) take place.

4. **Location of Chlorophyll**: Chlorophyll is specifically found in the thylakoid membranes, particularly within the grana. The grana are stacks of thylakoids that contain chlorophyll and are the sites of the light reactions of photosynthesis.

5. **Evaluating the Options**:
- **Grana**: This is the correct answer, as chlorophyll is located in the thylakoid membranes of the grana.
- **Paranoid**: This option is incorrect; it is not related to chloroplasts or chlorophyll.
- **Stroma**: This option is incorrect; while the stroma is important for photosynthesis, it does not contain chlorophyll.
- **Both Grana and Stroma**: This option is also incorrect because chlorophyll is not found in the stroma.

6. **Conclusion**: The correct answer is that chlorophyll in chloroplasts is located in the grana.

**Final Answer**: Grana

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