Which of the following is not a ciliary movement ?

Options

A. Food gathering in Paramoecium
B. Removal of dust particles in trachea
C. Passage of ova through female reproductive tract
D. Movement of macrophages and leucocytes

Answer

To determine which of the following options is not a ciliary movement, we will analyze each option provided:

1. **Food gathering in Paramecium**:
- Paramecium is a single-celled organism covered with cilia. These cilia beat in a coordinated manner to create water currents that help in capturing food particles. This is indeed a ciliary movement.

2. **Removal of dust particles in the trachea**:
- The trachea is lined with cilia that move in a coordinated fashion to sweep mucus and trapped dust particles out of the respiratory tract. This is also a ciliary movement.

3. **Passage of ova through the female reproductive tract**:
- The movement of ova is aided by cilia present in the fallopian tubes. These cilia help in moving the ova towards the uterus after ovulation. This is a ciliary movement as well.

4. **Movement of macrophages and leukocytes**:
- Macrophages and leukocytes are types of white blood cells that move using amoeboid movement. They extend pseudopodia to move and engulf foreign particles. This type of movement is not ciliary but amoeboid.

Based on the analysis, the option that does not represent a ciliary movement is the **movement of macrophages and leukocytes**.

### Step-by-Step Solution:
1. **Identify the options**: List all the options provided in the question.
2. **Analyze each option**:
- Check if the movement described involves cilia.
- Determine if the movement is instead amoeboid or another type.
3. **Conclude**: Identify which option does not involve ciliary movement.

### Final Answer:
The movement of macrophages and leukocytes is not a ciliary movement.