Largest erythrocytes in vertebrates measuring about `80 mu m` in diameter are found in :

Options

A. A. Python
B. B. Loxodonta
C. C. Cat
D. D. Amphiuma

Answer

To solve the question about which vertebrate has the largest erythrocytes measuring about 80 micrometers in diameter, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the vertebrate that possesses the largest erythrocytes (red blood cells), specifically those measuring about 80 micrometers in diameter.

2. **Define Erythrocytes**: Erythrocytes, or red blood cells (RBCs), are responsible for transporting oxygen in the blood, primarily through the protein hemoglobin.

3. **Identify Vertebrates**: All vertebrates typically possess RBCs, but there are exceptions, such as cold-water ice fishes, which do not have typical red blood cells.

4. **Compare Sizes of RBCs in Different Vertebrates**: RBC sizes can vary significantly among vertebrates. For instance, mammals generally have smaller RBCs compared to some other groups.

5. **Focus on Specific Groups**:
- Agnatha (jawless fish) tend to have larger RBCs than mammals.
- Urodeles (a group of amphibians) are known for having particularly large erythrocytes.

6. **Identify the Correct Group**: Among the vertebrates, Urodela (a class of amphibians) is known to have the largest erythrocytes, with sizes reaching around 80 micrometers.

7. **Conclusion**: Based on the information gathered, the organism that possesses the largest erythrocytes measuring about 80 micrometers in diameter is a member of the Urodela class of amphibians.

### Final Answer:
The largest erythrocytes in vertebrates measuring about 80 micrometers in diameter are found in Urodela amphibians.

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