Taking in of food particles or foreign bodies through cell membrane is

Options

A. Phagocytosis
B. Pinocytosis
C. Osmosis
D. Active transport

Answer

To solve the question "Taking in of food particles or foreign bodies through cell membrane is", we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the process by which cells take in food particles or foreign bodies through their cell membrane.

2. **Analyzing the Options**:
- **Option A: Phagocytosis**: This is a process where a cell engulfs solid particles, forming a phagosome. It is often referred to as "cell eating."
- **Option B: Pinocytosis**: This involves the ingestion of liquid material by the cell, also known as "cell drinking."
- **Option C: Osmosis**: This is the movement of water molecules across a selectively permeable membrane from an area of higher concentration to an area of lower concentration. It does not involve the intake of food particles or foreign bodies.
- **Option D: Active Transport**: This is the process of moving molecules against their concentration gradient (from lower to higher concentration) using energy (ATP). It is not specifically related to the intake of food particles.

3. **Identifying the Correct Process**: Since the question specifically mentions the intake of food particles or foreign bodies, we focus on the processes that involve solid particles. Phagocytosis is the correct process, as it directly relates to the engulfing of solid particles.

4. **Conclusion**: The correct answer to the question is **Option A: Phagocytosis**.

### Final Answer:
The taking in of food particles or foreign bodies through the cell membrane is called **Phagocytosis** (Option A).

---