Which of the following statements is CORRECT ?

Options

A. Mitochondria contain circular DNA, but chloroplasts lack it.
B. Chloroplasts contains circular DNA, but mitochondria lack it
C. Neither mitochondria nor chloroplasts contain any DNA
D. Both mitochondria and chloroplasts contain circular DNA

Answer

To determine which statement is correct regarding the DNA of mitochondria and chloroplasts, we will analyze each option based on our understanding of these organelles.

### Step-by-Step Solution:

1. **Understanding Mitochondria and Chloroplasts**:
- Mitochondria are known as the powerhouse of the cell, responsible for ATP (energy) production.
- Chloroplasts are responsible for photosynthesis and give green color to plants.

2. **DNA Structure in Mitochondria and Chloroplasts**:
- Both mitochondria and chloroplasts are unique organelles that contain their own DNA.
- The DNA present in both organelles is circular and resembles prokaryotic DNA.

3. **Analyzing the Options**:
- **Option 1**: "Mitochondria contain circular DNA but chloroplasts lack it."
- This statement is incorrect because chloroplasts also contain circular DNA.
- **Option 2**: "Chloroplasts contain circular DNA but mitochondria lack it."
- This statement is also incorrect for the same reason; mitochondria have circular DNA.
- **Option 3**: "Neither mitochondria nor chloroplast contain any DNA."
- This statement is incorrect as both organelles do contain DNA.
- **Option 4**: "Both mitochondria and chloroplasts contain circular DNA."
- This statement is correct as both organelles have their own circular DNA.

4. **Conclusion**:
- After analyzing all the options, it is clear that **Option 4** is the correct statement.

### Final Answer:
The correct statement is: **Both mitochondria and chloroplasts contain circular DNA.**