Which of the following statements is incorrect?

Options

A. Collateral glands help in the formation of ootheca
B. Gonapophysis is characteristic feature of male cockroach only
C. Malpighian tubules absorb nitrogenous waste from haemolymph and convert it into uric acid
D. Supraoesophageal ganglion supplies nerves to antennae and compound eyes

Answer

To determine which statement is incorrect, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Analyze the First Statement**:
- **Statement**: "Collateral glands help in the formation of ootheca."
- **Explanation**: In female cockroaches, collateral glands are responsible for secreting substances that form the ootheca, which is a protective casing for the eggs.
- **Conclusion**: This statement is **correct**.

2. **Analyze the Second Statement**:
- **Statement**: "Gonapophysis is a characteristic feature of the male cockroach only."
- **Explanation**: Gonapophysis refers to the external genitalia in cockroaches. Both male and female cockroaches possess gonapophysis, which plays a role in reproduction. Thus, stating it is only found in males is incorrect.
- **Conclusion**: This statement is **incorrect**.

3. **Analyze the Third Statement**:
- **Statement**: "Malpighian tubules absorb nitrogenous waste from the hemolymph and convert it into uric acid."
- **Explanation**: Malpighian tubules are the excretory structures in cockroaches that absorb nitrogenous wastes from the hemolymph and convert them into uric acid for excretion.
- **Conclusion**: This statement is **correct**.

4. **Analyze the Fourth Statement**:
- **Statement**: "Supraesophageal ganglion supplies nerves to antenna and the compound eyes."
- **Explanation**: The supraesophageal ganglion is part of the nervous system in cockroaches and is responsible for processing sensory information, including supplying nerves to the antennae and compound eyes.
- **Conclusion**: This statement is **correct**.

### Final Conclusion:
After analyzing all the statements, the **incorrect statement** is the second one: "Gonapophysis is a characteristic feature of the male cockroach only."

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