Which of the following is the odd one out ?

Options

A. Mitochondria
B. Chloroplast
C. Bacteriophage
D. Tobacco mosaic virus

Answer

To solve the question of identifying the odd one out from the given options, we will analyze each option step by step.

### Step 1: Identify the Options
The options provided are:
1. Mitochondria
2. Chloroplast
3. Bacteriophage
4. Tobacco Mosaic Virus (TMV)

### Step 2: Analyze Mitochondria
- Mitochondria are membrane-bound organelles found in eukaryotic cells.
- They are known as the powerhouse of the cell, where respiration occurs and energy is produced.
- Mitochondria contain their own circular DNA.

### Step 3: Analyze Chloroplast
- Chloroplasts are also membrane-bound organelles found in plant cells.
- They are responsible for photosynthesis, containing chlorophyll to capture sunlight.
- Like mitochondria, chloroplasts also have their own DNA.

### Step 4: Analyze Bacteriophage
- Bacteriophages are viruses that infect bacteria.
- They are not organelles but are considered organisms in their own right.
- Bacteriophages typically contain double-stranded DNA as their genetic material.

### Step 5: Analyze Tobacco Mosaic Virus (TMV)
- TMV is a virus that infects plants, particularly those in the potato family.
- Unlike the other options, TMV is an RNA virus, meaning its genetic material is RNA, not DNA.

### Conclusion
After analyzing all the options, we can conclude that:
- Mitochondria and chloroplasts are both membrane-bound organelles with their own DNA.
- Bacteriophages are viruses with DNA.
- TMV is the only one that has RNA as its genetic material.

Thus, the odd one out is **Tobacco Mosaic Virus (TMV)**.

### Final Answer
**The odd one out is Tobacco Mosaic Virus (TMV).**