Slipper animalcule is

Options

A. Paramecium
B. Euglena
C. Plasmodium
D. Monocystic.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:** The question asks to identify what "slipper animalcule" refers to.

2. **Analyzing the Options:** We have four options to consider:
- Option 1: Paramecium
- Option 2: Euglena
- Option 3: Plasmodium
- Option 4: Monocystic

3. **Identifying Key Features:** The term "slipper animalcule" suggests an organism that has a slipper-like shape. Additionally, the hint provided in the video mentions that slipper animalcules have cilia all over their body, which they use for movement and feeding.

4. **Evaluating Each Option:**
- **Paramecium:** This organism is known for its slipper shape and has cilia covering its body, which helps in locomotion and feeding.
- **Euglena:** This organism is typically elongated and has flagella, not cilia, and is not slipper-shaped.
- **Plasmodium:** This is a genus of parasitic protozoa and does not have a slipper shape or cilia.
- **Monocystic:** This term refers to a stage in the life cycle of certain organisms and is not an organism itself.

5. **Conclusion:** Based on the analysis, the only organism that matches the description of "slipper animalcule" with cilia all over its body is **Paramecium**.

**Final Answer:** Slipper animalcule is **Paramecium**.

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