Which of the following pigment is found in the blood of Pheretima?

Options

A. Haemoglobin
B. Haemocyanin
C. Erythrocruanin
D. (A) or ( C)

Answer

To answer the question "Which of the following pigment is found in the blood of Pheretima?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**: Pheretima is a genus of earthworms, which are part of the Annelida phylum. Understanding the biological classification helps in identifying the characteristics of their blood.

2. **Understand Blood Pigments**: Blood pigments are molecules that transport oxygen in the blood. Different organisms have different types of pigments based on their physiology.

3. **Evaluate the Options**:
- **Option A: Hemoglobin**: This is a common oxygen-carrying protein found in red blood cells (RBCs) of vertebrates. However, in earthworms like Pheretima, hemoglobin is not the primary pigment found in their blood.

- **Option B: Hemocyanin**: This is a copper-containing protein used by some invertebrates (like snails and crustaceans) for oxygen transport. It gives blood a blue color. However, this is not the pigment found in Pheretima.

- **Option C: Erythrocreorine**: This is a large molecule similar to hemoglobin, specifically found in annelids, including earthworms like Pheretima. It serves the function of oxygen transport in their blood.

4. **Conclusion**: Based on the evaluation of the options, the correct answer is **Erythrocreorine**, as it is the pigment found in the blood of Pheretima.

### Final Answer:
The pigment found in the blood of Pheretima is **Erythrocreorine**.

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