Which one of the following statements about mycoplasma is wrong

Options

A. They are also called PPLO
B. They are pleomorphic
C. They are sensitive to penicillin
D. They cause disease in plants

Explanation

To determine which statement about mycoplasma is wrong, we can follow these steps:

### Step 1: Understand the Characteristics of Mycoplasma
Mycoplasma are a unique group of bacteria characterized by their lack of a cell wall. This absence of a cell wall gives them a pleomorphic shape, meaning they can take on various forms.

**Hint:** Mycoplasma's lack of a cell wall is crucial to understanding their characteristics.

### Step 2: Analyze the Sensitivity to Antibiotics
Since mycoplasma do not have a cell wall, they are not affected by antibiotics that target cell wall synthesis, such as penicillin. Penicillin works by inhibiting the formation of peptidoglycan, which is absent in mycoplasma.

**Hint:** Consider how antibiotics work and their target structures in bacteria.

### Step 3: Identify the Diseases Caused by Mycoplasma
Mycoplasma can cause diseases in both plants and animals. This is an important aspect of their biology, as it highlights their pathogenic potential.

**Hint:** Look for information regarding the host range of mycoplasma.

### Step 4: Evaluate the Statements Provided
Now, we can evaluate the statements given in the question. We need to identify which statement contradicts the established facts about mycoplasma.

1. Mycoplasma are pleomorphic.
2. Mycoplasma do not have a cell wall.
3. Mycoplasma are sensitive to penicillin.
4. Mycoplasma can cause diseases in both plants and animals.

**Hint:** Focus on the statement that contradicts the information about their sensitivity to antibiotics.

### Step 5: Identify the Wrong Statement
From the analysis, the statement that mycoplasma are sensitive to penicillin is incorrect. This is because their lack of a cell wall means they are resistant to penicillin.

**Final Answer:** The wrong statement about mycoplasma is that they are sensitive to penicillin.

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