Largest isolated single cell is :-

Options

A. Mycoplasma
B. Ostrich egg
C. Human red blood cell
D. Nerve cells

Answer

To solve the question "Largest isolated single cell is:", we will analyze each of the given options step by step.

### Step-by-Step Solution:

1. **Identify the Options**: The question provides several options for the largest isolated single cell. We need to evaluate each option.

2. **Evaluate Option 1: Microplasma**:
- Microplasma is a type of bacteria.
- The size of microplasma is approximately 0.2 to 0.3 micrometers.
- Since this size is much smaller than other cells, it cannot be the largest isolated single cell.

3. **Evaluate Option 2: Ostrich Egg**:
- An ostrich egg is indeed a single cell.
- The size of an ostrich egg can be about 15 centimeters in diameter, making it the largest isolated single cell.
- Therefore, this option is a strong candidate for the answer.

4. **Evaluate Option 3: Human Red Blood Cell**:
- A human red blood cell typically measures about 6 to 8 micrometers in diameter.
- This size is significantly smaller than an ostrich egg, so it cannot be the largest isolated single cell.

5. **Evaluate Option 4: Nerve Cell**:
- A nerve cell (neuron) can have a length of about 0.1 millimeters (100 micrometers), but its overall size is still less than that of an ostrich egg.
- Thus, this option is also incorrect.

6. **Conclusion**:
- After evaluating all the options, the largest isolated single cell is the **Ostrich Egg**.

### Final Answer:
The largest isolated single cell is the **Ostrich Egg**.

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