Absorptive cells on free surface bear

Options

A. flagella
B. microvilli
C. desmosomes
D. pseudopodia

Answer

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about the structures that absorptive cells on the free surface bear. Absorptive cells are specialized cells that are involved in the absorption of nutrients.

2. **Analyze the Options**:
- **Flagella**: These are tail-like structures that aid in movement but are not involved in absorption. Therefore, this option is incorrect.
- **Microvilli**: These are tiny, hair-like projections found on the surface of absorptive cells, particularly in the intestines. They increase the surface area for absorption, making this option a strong candidate.
- **Desmosomes**: These are structures that provide adhesion between cells. While they are important for cell integrity, they do not play a direct role in absorption. Thus, this option is also incorrect.
- **Pseudopodia**: These are temporary extensions of the cell membrane used for movement in certain cells (like amoeba) and are not primarily involved in absorption. Therefore, this option is incorrect as well.

3. **Identify the Correct Answer**: Based on the analysis, microvilli are specifically designed to enhance the absorptive capacity of cells by increasing the surface area. Therefore, the correct answer is **microvilli**.

4. **Final Answer**: The absorptive cells on the free surface bear **microvilli**.