An example of syncytium is

Options

A. Pollen grain formation after meiosis
B. Any normal cell division
C. liquid endosperm in coconut
D. Human zygote

Answer

To solve the question "An example of syncytium is", we need to understand what a syncytium is and identify examples of it.

### Step-by-Step Solution:

1. **Definition of Syncytium**: A syncytium is a multinucleated cell that can result from the fusion of multiple cells. This phenomenon can occur in various biological contexts, including muscle tissue and certain viral infections.

2. **Examples of Syncytium**:
- **Skeletal Muscle Fibers**: These are the most common examples of syncytia in the human body. Skeletal muscle fibers are formed by the fusion of myoblasts (muscle precursor cells) and contain multiple nuclei.
- **Placental Tissues**: The syncytiotrophoblast is a layer of the placenta that is formed by the fusion of trophoblast cells, making it another example of a syncytium.
- **Viral Infections**: Certain viruses, such as HIV and respiratory syncytial virus (RSV), can induce the formation of syncytia in infected tissues.

3. **Identifying the Correct Answer**: Based on the definition and examples, we can conclude that skeletal muscle fibers and the syncytiotrophoblast are both valid examples of syncytia.

4. **Final Answer**: Therefore, an example of syncytium is skeletal muscle fibers or syncytiotrophoblast.