Anematic flagellum is found in

Options

A. Peranema
B. Polytoma
C. Cryptomonas
D. Urceolus.

Answer

To solve the question "An animatic flagellum is found in:", follow these steps:

### Step 1: Understand the term "animatic flagellum"
- An animatic flagellum is a type of flagellum that lacks lateral projections known as mastigonyms. This means it has a simpler structure compared to other types of flagella.

### Step 2: Identify the function of flagella
- Flagella are locomotory structures that help in the movement of organisms. They are typically hair-like projections that enable various protozoans and other organisms to swim or move through their environment.

### Step 3: Analyze the options provided
- The options given are:
1. Paranema
2. Polytoma
3. Cryptomonas
4. Ursulus

### Step 4: Recall the characteristics of the organisms
- **Paranema**: Known to have flagella but not specifically animatic.
- **Polytoma**: Also has flagella, but not classified as animatic.
- **Cryptomonas**: This organism is known to possess animatic flagella.
- **Ursulus**: Similar to the others, it does not have animatic flagella.

### Step 5: Conclude the correct answer
- Based on the characteristics of the organisms and the definition of animatic flagellum, the correct answer is **Cryptomonas**.

### Final Answer:
An animatic flagellum is found in **Cryptomonas**.

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