What is wrong about mycoplasma?

Options

A. they are called PPLO
B. they are pleomorphic
C. they are sensitive to penicillin
D. they produce diseases in plants

Answer

To answer the question "What is wrong about mycoplasma?", we need to analyze the provided options and determine which statement is incorrect regarding mycoplasma.

### Step-by-Step Solution:

1. **Understanding Mycoplasma**: Mycoplasma are the smallest bacteria known and are classified as pleuro-pneumonia like organisms (PPLO). They lack a rigid cell wall, which is a key characteristic.

2. **Analyzing the Options**:
- **Option A: They are called P.P. Allo**: This is a reference to their classification as PPLO (Pleuro-Pneumonia Like Organisms), which is correct.
- **Option B: They are pleomorphic**: Mycoplasma can change shape and size in response to environmental conditions due to the absence of a rigid cell wall, making this statement true.
- **Option C: They are sensitive to penicillin**: This statement is incorrect. Mycoplasma lack a cell wall, which is the target of penicillin. Therefore, they are resistant to penicillin.
- **Option D: They produce disease in my plants**: Mycoplasma can indeed cause diseases in plants, such as white leaf disease, making this statement true.

3. **Conclusion**: The only incorrect statement among the options is that mycoplasma are sensitive to penicillin. Therefore, the answer to the question is **Option C**.

### Final Answer:
The statement that is wrong about mycoplasma is: **They are sensitive to penicillin** (Option C).

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