Which of the following is false regarding cockroach?

Options

A. Most common species of Periplaneta americana
B. Adult of the common species of cockroach is about 34-53mm long
C. Body is unsegmented
D. They are omnivorous

Answer

To determine which statement is false regarding cockroaches, we will analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Identify the First Option:**
- The first option states that "Periplaneta Americana is the most common species of cockroach."
- **Analysis:** Periplaneta Americana, commonly known as the American cockroach, is indeed one of the most common species of cockroaches. This statement is **true**.

2. **Identify the Second Option:**
- The second option states that "The adult of the common species of cockroach is about 34 to 53 mm long."
- **Analysis:** The adult size of Periplaneta Americana ranges from approximately 34 to 53 mm. This statement is also **true**.

3. **Identify the Third Option:**
- The third option states that "The body is unsegmented."
- **Analysis:** Cockroaches have a segmented body structure. Their body is divided into three main regions: the head, thorax, and abdomen. Therefore, this statement is **false**.

4. **Identify the Fourth Option:**
- The fourth option states that "Cockroaches are omnivorous."
- **Analysis:** Cockroaches feed on both plant and animal matter, which makes them omnivorous. This statement is **true**.

### Conclusion:
The only false statement regarding cockroaches is that their body is unsegmented. Therefore, the correct answer is the third option.

### Final Answer:
The false statement regarding cockroaches is: "The body is unsegmented."

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