Which of the following characteristics is/are found in both chloroplasts and mitochondria ?
(a) Contains DNA
(b) Have membranes
(c) Reproduce by binary fission

Options

A. (a) only
B. (b) only
C. Only (a) & (b)
D. a, b, c

Answer

To determine which characteristics are found in both chloroplasts and mitochondria, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Option (a): Contains DNA**
- Both chloroplasts and mitochondria contain their own DNA. This DNA is circular and resembles bacterial DNA, which supports the endosymbiotic theory. Therefore, this characteristic is true for both organelles.

2. **Option (b): Have membranes**
- Both chloroplasts and mitochondria are double-membrane-bound organelles. They have an outer membrane and an inner membrane. This characteristic is also true for both organelles.

3. **Option (c): Reproduce by binary fission**
- Mitochondria reproduce by binary fission, similar to bacteria. However, chloroplasts do not reproduce by binary fission; they divide through a different mechanism. Therefore, this characteristic is not true for both organelles.

### Conclusion:
Based on the analysis:
- **Correct characteristics found in both chloroplasts and mitochondria:** (a) Contains DNA and (b) Have membranes.
- **Incorrect characteristic:** (c) Reproduce by binary fission (only true for mitochondria).

Thus, the correct answer is options (a) and (b).

### Final Answer:
The characteristics found in both chloroplasts and mitochondria are:
- (a) Contains DNA
- (b) Have membranes