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 can analyze each option provided:

1. **Contains DNA**:
- Both chloroplasts and mitochondria contain their own DNA. This DNA is distinct from the nuclear DNA of the cell and is involved in coding for proteins essential for their functions.

2. **Have membranes**:
- Both organelles are surrounded by membranes. Chloroplasts have a double membrane structure, consisting of an outer and inner membrane, while mitochondria also have a double membrane, which includes an outer membrane and a highly folded inner membrane.

3. **Reproduce by binary fission**:
- Both chloroplasts and mitochondria replicate independently of the cell cycle through a process known as binary fission, which is similar to the way prokaryotic cells divide.

Now, let's summarize the findings:

- **(a) Contains DNA**: True for both chloroplasts and mitochondria.
- **(b) Have membranes**: True for both chloroplasts and mitochondria.
- **(c) Reproduce by binary fission**: True for both chloroplasts and mitochondria.

Since all three characteristics are found in both chloroplasts and mitochondria, the correct answer is that all options (a), (b), and (c) are characteristics found in both organelles.

### Final Answer:
All of the characteristics (a), (b), and (c) are found in both chloroplasts and mitochondria.