Pigmented regions of the chloroplast are

Options

A. Stroma
B. Inner membrane
C. Thylakoids
D. (2) & (3)

Answer

To answer the question about the pigmented regions of the chloroplast, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Chloroplasts**: Chloroplasts are organelles 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. **Identify the Components of Chloroplasts**: Inside the chloroplast, there are various structures, including thylakoids, stroma, and the inner and outer membranes.

3. **Focus on the Thylakoids**: Thylakoids are membrane-bound structures within the chloroplast that are stacked to form grana. They contain chlorophyll and other pigments necessary for capturing light energy during photosynthesis.

4. **Determine the Pigmented Regions**: The pigmented regions of the chloroplast are primarily found in the thylakoids, where chlorophyll and other pigments are located. These pigments are crucial for the absorption of light.

5. **Eliminate Incorrect Options**:
- The outer membrane does not contain pigments.
- The stroma is the fluid-filled space that surrounds the thylakoids and does not contain pigments.
- The inner membrane is involved in the formation of thylakoids but does not contain pigments itself.

6. **Conclude the Answer**: Given that the thylakoids contain the pigments necessary for photosynthesis, the correct answer to the question is that the pigmented regions of the chloroplast are the **thylakoids**.

### Final Answer:
The pigmented regions of the chloroplast are **thylakoids**.

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