Mucus cells (Goblet cells) :-
(a) Unicellular glands
(b) Multicellular glands
(c) Loosely arranged cells
(d) Dead keratinized cells

Options

A. Unicellular glands
B. Multicellular glands
C. Loosely arranged cells
D. Dead keratinized cells

Answer

**Step-by-Step Solution:**

1. **Understanding Goblet Cells**: Goblet cells, also known as mucus cells, are specialized cells found in various epithelial tissues. They are primarily responsible for the secretion of mucus.

2. **Identifying the Type of Gland**: Goblet cells are classified as unicellular glands. This means that they consist of a single cell type that performs the function of secretion.

3. **Function of Goblet Cells**: The primary function of goblet cells is to produce and secrete mucus, which serves to lubricate and protect the epithelial surfaces. They secrete gel-forming substances known as mucins, which are key components of mucus.

4. **Analyzing the Options**:
- (a) Unicellular glands - This is correct as goblet cells are indeed unicellular.
- (b) Multicellular glands - This is incorrect as goblet cells are not made up of multiple cells.
- (c) Loosely arranged cells - This does not accurately describe goblet cells, as they are specific secretory cells rather than a loose arrangement.
- (d) Dead keratinized cells - This is incorrect; goblet cells are living cells that actively secrete mucus.

5. **Conclusion**: Based on the analysis, the correct answer is (a) Unicellular glands.

---