Which similarity is found between chloroplast and mitochondria ?

Options

A. Both the semi-autonomous contain double stranded circular DNA an double membrane bound
B. Both are autonomous organelle
C. Both are single membrane bounded
D. Both contains 80S type of ribosome

Answer

To answer the question "Which similarity is found between chloroplast and mitochondria?", we can break down the similarities step by step.

### Step-by-Step Solution:

1. **Identify the Organelles**:
- Chloroplasts and mitochondria are both organelles found in eukaryotic cells.

2. **Structure**:
- Both chloroplasts and mitochondria have a double membrane structure. This means they are surrounded by two lipid bilayers.

3. **Genetic Material**:
- Both organelles contain their own DNA, which is double-stranded and circular. This is similar to the DNA found in prokaryotic cells.

4. **Ribosomes**:
- Both chloroplasts and mitochondria contain ribosomes that are similar to prokaryotic ribosomes, specifically 70S ribosomes, which are different from the 80S ribosomes found in the cytoplasm of eukaryotic cells.

5. **Semi-Autonomous Nature**:
- Both organelles are considered semi-autonomous. This means they can replicate independently of the cell cycle, but they still rely on the cell for some functions and materials.

6. **Function**:
- While they have different primary functions (chloroplasts are involved in photosynthesis, and mitochondria are involved in ATP production), they both play crucial roles in energy metabolism within the cell.

### Conclusion:
The similarities between chloroplasts and mitochondria include:
- Both have a double membrane structure.
- Both contain double-stranded circular DNA.
- Both have 70S type ribosomes.
- Both are semi-autonomous organelles.