Which of the following features is not related to the cockroach?

Options

A. Body divisible into head, thorax and abdomen
B. Two pairs of wings are found
C. Three pairs of jointed legs are present on abdomen
D. Pressence of anal cerci in both sexes.

Answer

To determine which feature is not related to the cockroach, we will analyze each option provided in the question step by step.

### Step 1: Analyze the first option
- **Feature**: Body divisible into head, thorax, and abdomen.
- **Analysis**: This is a correct feature of the cockroach. The body of a cockroach is indeed divided into these three main parts: the head, thorax, and abdomen.

### Step 2: Analyze the second option
- **Feature**: Two pairs of wings are found.
- **Analysis**: This statement is also correct. Cockroaches possess two pairs of wings, which are used for gliding and flying.

### Step 3: Analyze the third option
- **Feature**: Three pairs of jointed legs are present on the abdomen.
- **Analysis**: This statement is incorrect. In cockroaches, three pairs of jointed legs are present on the thorax, not the abdomen. Therefore, this is the feature that is not related to cockroaches.

### Step 4: Analyze the fourth option
- **Feature**: Presence of anal sac in both sexes.
- **Analysis**: This statement is correct. Cockroaches do have an anal sac, which is present in both male and female cockroaches.

### Conclusion
After analyzing all the options, the feature that is not related to the cockroach is:
- **Correct Answer**: Three pairs of jointed legs are present on the abdomen.

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