Stroma is the ground matrix of

Options

A. Lysosomes
B. Oxysomes
C. Ribosomes
D. Chloroplast.

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Stroma":**
- Stroma refers to the fluid-filled space or ground matrix found within certain organelles. It plays a crucial role in various biological processes.

2. **Identifying the Organelles:**
- The options given are lysosomes, auxosomes, ribosomes, and chloroplasts. We need to determine which of these organelles contains stroma as its ground matrix.

3. **Analyzing Each Option:**
- **Lysosomes:** These are membrane-bound organelles that contain hydrolytic enzymes for breaking down waste materials and cellular debris. They do not contain stroma.
- **Auxosomes:** These are structures associated with the inner membrane of mitochondria. They are not related to stroma.
- **Ribosomes:** These are the sites of protein synthesis in the cell and do not have a stroma.
- **Chloroplasts:** These are the organelles in plant cells responsible for photosynthesis. They contain stroma, which is the fluid matrix surrounding the thylakoids.

4. **Conclusion:**
- Since stroma is specifically the ground matrix of chloroplasts, the correct answer is **chloroplasts**.

**Final Answer:** Stroma is the ground matrix of **chloroplasts**.

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