Read the following statements about the cockroach and select the option :
I. Forewings (mesothoracic) called tegmina are opaque dark and leathery and cover the hind wings .
II. Head is formed by the fusion of eight segments and shows little mobility .
III. Genital pouch in male is formed by `9^(th) and 10^(th)` terga and `9^(th)` sternum.

Options

A. I, II and III are correct
B. II and III are incorrect
C. Only I is correct
D. Only II is incorrect

Answer

To solve the question regarding the statements about the cockroach, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyzing Statement I**:
- The first statement claims that the forewings (mesothoracic) called tegmina are opaque, dark, leathery, and cover the hind wings.
- This statement is **correct**. The forewings of a cockroach are indeed called tegmina, and they serve to protect the hind wings when the cockroach is at rest. They are opaque and leathery in texture.

**Hint**: Remember that tegmina are the protective forewings of cockroaches, distinct from the membranous hind wings used for flight.

2. **Analyzing Statement II**:
- The second statement states that the head is formed by the fusion of eight segments and shows little mobility.
- This statement is **incorrect**. The head of a cockroach is formed by the fusion of **six segments**, not eight, and it has a flexible neck that allows for considerable mobility.

**Hint**: Focus on the number of segments that make up the cockroach's head and its mobility; it is more mobile than stated.

3. **Analyzing Statement III**:
- The third statement mentions that the genital pouch in males is formed by the 9th and 10th terga and the 9th sternum.
- This statement is **correct**. In male cockroaches, the genital pouch is indeed formed by the 9th and 10th terga (dorsally) and the 9th sternum (ventrally).

**Hint**: Pay attention to the anatomical structure of the male genital pouch and the specific segments involved.

### Conclusion:
- **Correct Statements**: I and III are correct.
- **Incorrect Statement**: II is incorrect.

### Final Answer:
The correct option would indicate that only the second statement is incorrect.