Macrophages and leucocytes exhibit

Options

A. ciliary movement
B. flagellar movement
C. amoeboid movement
D. gliding movement

Explanation

**Step-by-Step Solution:**

1. **Understanding Macrophages:**
- Macrophages are a type of immune cell that play a crucial role in the body's defense mechanism. They are known as polymorphic cells, meaning they can change shape.
- Their primary function is to perform phagocytosis, which is the process of engulfing and digesting cellular debris, pathogens, and other harmful substances.

2. **Movement of Macrophages:**
- Macrophages exhibit a type of movement that is similar to amoebas. This movement is facilitated by structures called pseudopodia, which are temporary projections of the cell membrane.
- The ability to extend and retract these pseudopodia allows macrophages to move toward the site of infection or inflammation.

3. **Understanding Leukocytes:**
- Leukocytes, commonly known as white blood cells (WBCs), are another type of immune cell. They are colorless and are produced in the bone marrow.
- Leukocytes are essential for the immune response and help in fighting infections.

4. **Movement of Leukocytes:**
- Like macrophages, leukocytes also exhibit amoeboid movement. This means they can change shape and move in a manner similar to amoebas.
- When leukocytes need to exit the bloodstream to reach sites of infection or injury, they undergo a process called diapedesis, which allows them to squeeze through the walls of blood vessels.

5. **Commonality in Movement:**
- Both macrophages and leukocytes exhibit amoeboid movement. This type of movement is characterized by the ability to change shape and move in a fluid manner, similar to the movement of amoebas.

6. **Conclusion:**
- Therefore, the answer to the question is that both macrophages and leukocytes exhibit amoeboid movement.

**Final Answer:**
- Macrophages and leukocytes exhibit amoeboid movement.

---