Which one of the following is a flagellated protozoan?

Options

A. Trypanosoma
B. Plasmodium
C. Amoeba
D. Paramoecium

Answer

To determine which of the given options is a flagellated protozoan, we can follow these steps:

### Step 1: Understand the Characteristics of Protozoa
Protozoa are single-celled organisms that belong to the kingdom Protista. They can be classified based on their movement mechanisms, which include flagella, cilia, and pseudopodia.

**Hint:** Remember that protozoa are categorized based on how they move.

### Step 2: Identify the Types of Protozoa in the Options
The options provided are:
- A) Trypanosoma
- B) Plasmodium
- C) Amoeba
- D) Paramecium

**Hint:** Look for the movement mechanism associated with each organism.

### Step 3: Analyze Each Option
- **A) Trypanosoma**: This is a flagellated protozoan known for its whip-like flagella that aid in movement. It is also a parasitic organism that can cause diseases like sleeping sickness.

- **B) Plasmodium**: This organism is a sporozoan and does not have flagella. It is known for causing malaria and relies on mosquitoes for its life cycle.

- **C) Amoeba**: Amoebas are characterized by their ability to change shape and move using pseudopodia (false feet). They do not have flagella.

- **D) Paramecium**: Paramecium is covered in cilia, which are short hair-like structures that help in movement. It is not flagellated.

**Hint:** Identify the organism that uses flagella for movement.

### Step 4: Conclusion
Based on the analysis, the only flagellated protozoan among the options is **A) Trypanosoma**.

**Final Answer:** A) Trypanosoma