Which of the following pairs of organelles is semi-autonomous

Options

A. Mitochondria and chloroplasts
B. Mitochondria and Golgi body
C. Mitochondria and E.R.
D. Mitochondria and lysosomes

Answer

To determine which pair of organelles is semi-autonomous, we need to analyze the options provided and understand the characteristics of semi-autonomous organelles.

### Step-by-Step Solution:

1. **Understand the term "semi-autonomous":**
- Semi-autonomous organelles are those that can replicate independently of the cell's nucleus and contain their own DNA. They are not completely autonomous, as they still rely on the cell for some functions.

2. **Identify the organelles:**
- The options given are:
- A) Mitochondria and chloroplasts
- B) Mitochondria and Golgi body
- C) Mitochondria and endoplasmic reticulum
- D) Mitochondria and lysosomes

3. **Evaluate each option:**
- **Option A: Mitochondria and chloroplasts**
- Both mitochondria and chloroplasts have their own DNA and can replicate independently. They are involved in energy production (mitochondria) and photosynthesis (chloroplasts).
- **Option B: Mitochondria and Golgi body**
- The Golgi body does not have its own DNA and cannot replicate independently.
- **Option C: Mitochondria and endoplasmic reticulum**
- The endoplasmic reticulum does not have its own DNA and cannot replicate independently.
- **Option D: Mitochondria and lysosomes**
- Lysosomes do not have their own DNA and cannot replicate independently.

4. **Conclusion:**
- The only pair of organelles that are semi-autonomous is **mitochondria and chloroplasts**.

### Final Answer:
The correct answer is **A) Mitochondria and chloroplasts**.

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