Yellow cells can be traced in

Options

A. Blood of earthworm
B. Coelomic fluid of earthworm
C. Blood of cockroach
D. Body wall of Leucosolenia

Answer

**Step-by-Step Solution:**

1. **Understanding Yellow Cells**: Yellow cells, also known as chloragogen cells, are specialized cells found in certain invertebrates, particularly in annelids like earthworms.

2. **Function of Yellow Cells**: These cells function similarly to the liver in vertebrates. They are responsible for storing glycogen and neutralizing toxins.

3. **Color of Yellow Cells**: The yellow color of these cells is due to the presence of yellow granules called chlorocosms. These granules contain various substances that contribute to the cell's functions.

4. **Location of Yellow Cells**: Yellow cells are primarily found in the coelomic fluid of earthworms, not in their blood. This is a key distinction to note.

5. **Analyzing Options**:
- **Option A**: Blood of earthworms - Incorrect, as yellow cells are not found in the blood.
- **Option B**: Coelomic fluid of earthworms - Correct, as yellow cells are located here.
- **Option C**: Blood of cockroach - Incorrect, as cockroaches do not have yellow cells.
- **Option D**: Coelomic fluid of cockroach - Incorrect, as cockroaches do not possess coelomic fluid like earthworms.

6. **Conclusion**: Based on the analysis, the correct answer is that yellow cells can be traced in the coelomic fluid of earthworms.

**Final Answer**: Yellow cells can be traced in the coelomic fluid of earthworms.

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