Choose the incorrect statement about cockroaches from the following.
(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 and 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.

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 determine the incorrect statement about cockroaches, let's analyze each option provided in the question step by step.

### Step 1: Analyze Statement (a)
**Statement:** Antennae have sensory receptors that help in monitoring the environment.

**Analysis:** Cockroaches possess a pair of antennae that are equipped with various sensory receptors. These receptors allow cockroaches to detect changes in their environment, such as humidity, temperature, and chemical signals. Therefore, this statement is **correct**.

### Step 2: Analyze Statement (b)
**Statement:** The head is formed by the fusion of six segments and shows great mobility in all directions and a flexible neck.

**Analysis:** The head of a cockroach is indeed formed by the fusion of six segments, which allows for a high degree of mobility in various directions. The flexible neck further enhances this mobility. Thus, this statement is also **correct**.

### Step 3: Analyze Statement (c)
**Statement:** The first pair of wings arises from the mesothorax and the second pair from the metathorax.

**Analysis:** In cockroaches, the first pair of wings does arise from the mesothorax, while the second pair arises from the metathorax. This anatomical detail is accurate, making this statement **correct**.

### Step 4: Analyze Statement (d)
**Statement:** In males, the genital pouch or chamber lies at the hind end of the abdomen bounded ventrally by the 9th and 10th terga and dorsally by the 9th sternum.

**Analysis:** This statement is incorrect. In male cockroaches, the genital pouch is located at the hind end of the abdomen, but it is bounded **ventrally** by the 9th sternum and **dorsally** by the 9th and 10th terga. The wording of the statement is misleading regarding the boundaries of the genital pouch. Therefore, this statement is **incorrect**.

### Conclusion
The incorrect statement about cockroaches is **(d)**.

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