Which organism is spindle -shaped ?

Options

A. Paramecium
B. Bacteria
C. Ameoba
D. Yeast

Answer

To determine which organism is spindle-shaped, we can analyze the given options one by one:

1. **Paramecium**: Paramecium is a unicellular organism that is often described as having a slipper or elongated shape, which can be considered spindle-like.

2. **Bacteria**: Bacteria can have various shapes, including spherical (cocci), rod-shaped (bacilli), and spiral (spirilla), but they are not typically described as spindle-shaped.

3. **Amoeba**: Amoebas are known for their irregular, blob-like shape. They do not have a defined shape and are not spindle-shaped.

4. **Yeast**: Yeast cells are generally oval or round and do not resemble a spindle shape.

Based on this analysis, the organism that is spindle-shaped is **Paramecium**.

### Step-by-Step Solution:
1. **Identify the options**: The question provides four organisms: Paramecium, Bacteria, Amoeba, and Yeast.
2. **Analyze each organism's shape**:
- Paramecium: Slipper or elongated shape, spindle-like.
- Bacteria: Various shapes, not spindle-shaped.
- Amoeba: Irregular, blob-like shape, not spindle-shaped.
- Yeast: Oval or round shape, not spindle-shaped.
3. **Determine the correct answer**: Based on the shape analysis, Paramecium is the only organism that can be described as spindle-shaped.
4. **Conclude**: The correct answer to the question is **Paramecium**.