Goblet cells are

Options

A. Unicellular glands
B. Multicellular glands
C. Stratified epithelium
D. Dead keratinised cells.

Answer

**Step-by-Step Text Solution:**

1. **Understanding Goblet Cells**: Goblet cells are specialized cells found in various epithelial tissues. They are primarily known for their role in secreting mucus.

2. **Identifying the Type of Gland**: Goblet cells are classified as exocrine glands. Exocrine glands are those that secrete their products onto epithelial surfaces or into body cavities.

3. **Unicellular vs. Multicellular Glands**:
- Unicellular glands consist of a single cell that performs the secretory function.
- Multicellular glands are composed of multiple cells and usually have ducts through which their secretions are transported.

4. **Goblet Cells as Unicellular Glands**: Goblet cells are considered unicellular exocrine glands because they consist of a single cell that secretes mucus directly onto the epithelial surface through a process called exocytosis.

5. **Exclusion of Other Options**:
- Goblet cells are not multicellular glands, as they consist of only one cell.
- They do not form stratified epithelium, which is a type of tissue made up of multiple layers of cells.
- They are also not dead keratinized cells, as goblet cells actively secrete mucus and do not contain keratin.

6. **Conclusion**: Therefore, the correct classification of goblet cells is that they are unicellular glands.

**Final Answer**: Goblet cells are unicellular glands.

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