Choose the incorrect statement about cockroaches from the following.

Options

A. Antennae have sensory receptors that help in monitoring the environment.
B. The head is formed by the fusion of six segments and show great mobility in all directions dus tow flexible neck .
C. The first pair of wings arise from the mesothorax and the second pair from the metathorax.
D. In males , the genital pouch or chamber lies at the hind end of abdomen bounded ventrally by 9th and 10th terga and dorsally by the 9th sternum.

Answer

To solve the question about cockroaches, we need to analyze each statement provided and determine which one is incorrect. Let’s go through each statement step by step.

### Step 1: Analyze Statement 1
**Statement:** Antennae have sensory receptors that help in monitoring the environment.
- **Analysis:** This statement is correct. Cockroaches have a pair of antennae that are equipped with sensory receptors, allowing them to detect environmental changes such as touch, smell, and humidity.

### Step 2: Analyze Statement 2
**Statement:** The head is formed by the fusion of six segments and shows great mobility in all directions due to a flexible neck.
- **Analysis:** This statement is also correct. The head of a cockroach is indeed formed from the fusion of multiple segments (six segments) and has a flexible neck that allows it to move in various directions.

### Step 3: Analyze Statement 3
**Statement:** The first pair of veins arises from the mesothorax and the second from the metathorax.
- **Analysis:** This statement is correct. In cockroaches, the wings have veins that originate from specific thoracic segments: the forewings (first pair) arise from the mesothorax, and the hindwings (second pair) arise from the metathorax.

### Step 4: Analyze Statement 4
**Statement:** In males, the genital pouch or chamber lies at the hind end of the abdomen, bounded ventrally by the 9th and 10th tergum and dorsally by the 9th sternum.
- **Analysis:** This statement is incorrect. In male cockroaches, the genital pouch is actually bounded dorsally by the 9th and 10th tergum and ventrally by the 9th sternum. The statement incorrectly identifies the boundaries.

### Conclusion
After analyzing all the statements, we find that the incorrect statement is **Statement 4**.

### Final Answer
The incorrect statement about cockroaches is **Statement 4**.

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