The largest single cell in the world is the egg of a/an ________

Options

A. Ostrich
B. Amoeba
C. Paramecium
D. Fish

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the largest single cell in the world, specifically identifying it as an egg from a particular organism.

2. **Identifying the Options**: The options provided are:
- Ostrich
- Amoeba
- Paramecium
- Fish

3. **Defining a Cell**: A cell is defined as the basic structural and functional unit of life. All living organisms are made up of cells, and they can vary significantly in size.

4. **Considering the Size of Cells**: The size of cells can range from about 0.5 micrometers to 100 micrometers. However, some specialized cells, like eggs, can be much larger.

5. **Identifying the Largest Cell**: Among the options, the egg of an ostrich is known to be the largest single cell. It is a single-celled structure, which is significant because it is much larger than typical cells.

6. **Conclusion**: Therefore, the answer to the question is that the largest single cell in the world is the egg of an **ostrich**.

**Final Answer**: The largest single cell in the world is the egg of an **ostrich**.

---