The substance of blood that transports o, in Pheritima is found in 

Options

A. Phagocytes
B. Lymph
C. Blood cells
D. Plasma

Answer

To solve the question regarding the substance of blood that transports oxygen in Pheritima (the common earthworm), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**:
- Pheritima refers to the common earthworm, which is a type of annelid.

2. **Understand the Blood Composition in Earthworms**:
- Earthworms do not have red blood cells (RBCs) like humans do. Instead, they have a different mechanism for transporting oxygen.

3. **Identify the Oxygen Transport Substance**:
- In earthworms, the substance responsible for transporting oxygen is hemoglobin. However, unlike in vertebrates, hemoglobin in earthworms is not contained within red blood cells.

4. **Determine Where Hemoglobin is Found**:
- In Pheritima, hemoglobin is dissolved in the plasma of the blood rather than being contained in cells. This means that the plasma plays a crucial role in the transport of oxygen.

5. **Evaluate the Options**:
- **Phagocytes**: These are a type of white blood cell and are not involved in oxygen transport in earthworms. (Incorrect)
- **Lymph**: This is a fluid similar to blood but is not present in earthworms for oxygen transport. (Incorrect)
- **Blood Cells**: Since earthworms lack RBCs, this option is also incorrect.
- **Plasma**: This is the correct answer as it contains dissolved hemoglobin that transports oxygen.

6. **Conclusion**:
- The correct answer is **plasma** (Option 4), as it is the component of blood in Pheritima that transports oxygen.

### Final Answer:
The substance of blood that transports oxygen in Pheritima is found in **plasma**.

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