Which of the following is a correct statement for cockroach?

Options

A. Forewings are transparent and leathery
B. Hindwings are transparent and membranous
C. Hindwings are used for flight
D. Both (2) and (3) are correct

Answer

To determine the correct statement about cockroaches, we need to analyze the characteristics of their wings.

1. **Understanding the Wing Structure**:
- Cockroaches have two pairs of wings: forewings and hindwings.
- The forewings are opaque, dark in color, and leathery. They serve primarily as protective coverings for the hindwings and the body.
- The hindwings, on the other hand, are transparent and membranous. They are primarily used for flight.

2. **Evaluating the Statements**:
- **Statement 1**: "Forewings are transparent and leathery."
- This statement is incorrect because forewings are not transparent; they are opaque and leathery.
- **Statement 2**: "Hindwings are transparent and membranous."
- This statement is correct. The hindwings are indeed transparent and made of a membranous structure.
- **Statement 3**: "Hindwings are used for flight."
- This statement is also correct. The hindwings are the primary wings used for flying in cockroaches.

3. **Conclusion**:
- Since statements 2 and 3 are correct, the correct answer to the question is "both 2 and 3".

### Final Answer:
The correct statements for cockroaches are that the hindwings are transparent and membranous, and they are used for flight. Therefore, the answer is "both 2 and 3".