Which of the following is not a cell inclusion ?

Options

A. granule
B. Glycocalyx
C. Pigment
D. Vacuole

Answer

To determine which of the following options is not a cell inclusion, we first need to understand what cell inclusions are.

### Step-by-Step Solution:

1. **Definition of Cell Inclusions**:
- Cell inclusions are non-living substances found within the cytoplasm of a cell. They are typically stored materials that are not bound by a membrane. Examples include granules, pigments, and vacuoles.

2. **Analyzing the Options**:
- **Granule**: Granules are indeed a type of cell inclusion. They can store substances like glycogen or starch.
- **Glycocalyx**: Glycocalyx is a structure found outside the cell membrane in some bacteria. It is a protective layer that is not a storage inclusion but rather a part of the cell envelope.
- **Pigment**: Pigments can be found as inclusions within the cell, contributing to coloration and other functions.
- **Vacuole**: Vacuoles are also considered cell inclusions as they can store various substances within the cell.

3. **Conclusion**:
- Among the options provided, **Glycocalyx** is not a cell inclusion because it is a structural component of the cell envelope rather than a stored substance within the cytoplasm.

### Final Answer:
The option that is not a cell inclusion is **Glycocalyx**.