Which of the following is an incorrect match?
(a) Radula- Feeding
(b) Ctenidia-Respiration
(c) Organ of Bojanus-Excretion
(d) Keber's organ Pearl formation

Options

A. Radula- Feeding
B. Ctenidia-Respiration
C. Organ of Bojanus-Excreation
D. Keber's organ Pearl formation

Answer

To determine which of the following options is an incorrect match, we will analyze each option one by one:

1. **Radula - Feeding**:
- The radula is a tongue-like structure found in mollusks. It is used for scraping food particles off surfaces and is indeed involved in the feeding process.
- **Conclusion**: This is a correct match.

2. **Ctenidia - Respiration**:
- Ctenidia are gill-like structures found in mollusks that are involved in respiration. They facilitate gas exchange, allowing the organism to breathe.
- **Conclusion**: This is a correct match.

3. **Organ of Bojanus - Excretion**:
- The Organ of Bojanus, also known as Bojanus organ, is an excretory organ found in bivalves (a class of mollusks). Its primary function is to help in the excretion of waste products.
- **Conclusion**: This is a correct match.

4. **Keber's organ - Pearl formation**:
- Keber's organ is associated with the excretory system in bivalves and is not related to pearl formation. Pearls are formed through a different biological process involving the mantle tissue of mollusks, not Keber's organ.
- **Conclusion**: This is an incorrect match.

Based on the analysis above, the incorrect match is:

**Answer: (d) Keber's organ - Pearl formation**

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