Pharyngeal nephridia of Pheretima are found in segments

Options

A. 6, 7, 8
B. 5, 6, 7
C. 3, 4, 5
D. 4, 5, 6

Answer

To answer the question regarding the segments in which pharyngeal nephridia of Pheretima (earthworm) are found, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Organism**: Recognize that Pheretima refers to a genus of earthworms, which are segmented worms belonging to the phylum Annelida.

2. **Identify Nephridia**: Nephridia are excretory organs in earthworms that help in the removal of nitrogenous waste. The question specifically asks about pharyngeal nephridia.

3. **Locate the Segments**: The pharyngeal nephridia are specifically mentioned to be located in certain segments of the earthworm.

4. **Determine the Correct Segments**: According to the information provided, pharyngeal nephridia are found in segments 4, 5, and 6 of the earthworm.

5. **Select the Correct Option**: Based on the segments identified, the correct option that includes segments 4, 5, and 6 is option D (456).

### Final Answer:
The pharyngeal nephridia of Pheretima are found in segments 4, 5, and 6.

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