Sweeping type of rhythmic movements are shown by

Options

A. flagella
B. cilia
C. both (1) & (2)
D. centrosome

Answer

To solve the question regarding which structures exhibit sweeping type of rhythmic movements, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: The question provides the following options:
- Flagella
- Cilia
- Both flagella and cilia
- Centrosome

2. **Understand Flagella**:
- Flagella are long, whip-like structures that enable movement. They are known for their undulating, sweeping motion which propels cells forward.

3. **Understand Cilia**:
- Cilia are shorter, hair-like structures that also exhibit rhythmic movements. They can beat in a coordinated manner to create a sweeping motion, often moving substances across the surface of cells.

4. **Evaluate Centrosome**:
- The centrosome is an organelle that contains centrioles and is involved in cell division (specifically spindle formation). It does not exhibit any type of sweeping or rhythmic movement.

5. **Determine the Correct Answer**:
- Since both flagella and cilia exhibit sweeping rhythmic movements, the correct answer is "both flagella and cilia".

6. **Select the Option**:
- Therefore, the answer to the question is "both one and two".

### Final Answer:
Both flagella and cilia exhibit sweeping type of rhythmic movements.

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