Keber's organ is found in

Options

A. Mollusca
B. Arthropoda
C. Annelida
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where Kebber's organ is found. We need to identify the correct group of animals from the given options: Mollusca, Arthropoda, Annelida, or none of these.

2. **Identifying Kebber's Organ**: Kebber's organ is an excretory structure. It is important to know what this organ does and in which organisms it is typically found.

3. **Researching the Function and Location**: Kebber's organ is described as a gland-like organ that is located in front of the pericardium in certain mollusks. Its primary function is to remove nitrogenous waste from the body.

4. **Analyzing the Options**:
- **Mollusca**: Known to have Kebber's organ as part of their excretory system.
- **Arthropoda**: Do not possess Kebber's organ; they have other types of excretory structures.
- **Annelida**: Also do not have Kebber's organ; they have nephridia for excretion.
- **None of these**: This option is incorrect since we have identified a specific group that contains Kebber's organ.

5. **Conclusion**: Based on the information gathered, Kebber's organ is found in Mollusca. Therefore, the correct answer is option A: Mollusca.

**Final Answer**: Kebber's organ is found in Mollusca (Option A).

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