Which of following is not common in chloroplasts & mitochondria ?

Options

A. Both are present in animal cells
B. Both contain their own genetic material
C. Both are present in eukaryotic cell
D. Both are present in plant cells

Answer

To determine which of the following is not common in chloroplasts and mitochondria, we need to analyze the characteristics and functions of both organelles. Here’s a step-by-step solution:

### Step 1: Understand the Structure and Function of Chloroplasts and Mitochondria
- **Chloroplasts** are organelles found in plant cells and some protists. They are responsible for photosynthesis, converting light energy into chemical energy in the form of glucose.
- **Mitochondria** are found in nearly all eukaryotic cells (including plant and animal cells) and are known as the powerhouses of the cell, as they produce ATP through cellular respiration.

### Step 2: Identify Common Features
- Both chloroplasts and mitochondria have their own **extra-chromosomal DNA** (also known as mitochondrial DNA and chloroplast DNA), which is separate from the nuclear DNA.
- Both organelles are involved in energy conversion processes: chloroplasts in photosynthesis and mitochondria in cellular respiration.
- Both are present in **eukaryotic cells**.

### Step 3: Analyze the Options
- Now, let’s look at the options provided in the question:
1. Both are present in animal cells.
2. Both contain their own genetic materials.
3. Both are present in plant cells.
4. Both are present in eukaryotic cells.

### Step 4: Determine the Incorrect Option
- **Option 1**: "Both are present in animal cells" is **not true** because chloroplasts are absent in animal cells.
- **Option 2**: "Both contain their own genetic materials" is true.
- **Option 3**: "Both are present in plant cells" is true.
- **Option 4**: "Both are present in eukaryotic cells" is true.

### Conclusion
The correct answer is **Option 1: Both are present in animal cells**, as chloroplasts are not found in animal cells.

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