Soap box like cell wall is characteristic of :-

Options

A. Archae bacteria
B. Diatoms
C. Dinoflagellates
D. Euglenoids

Answer

To solve the question regarding which organism has a cell wall characteristic of a "soap box," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question is asking which organism has a cell wall that resembles a soap box. This requires knowledge of different organisms and their cell wall structures.

2. **Identify the Options**: The options provided are:
- A) Archaebacteria
- B) Diatoms
- C) Dinoflagellates
- D) Euglena

3. **Analyze Each Option**:
- **Archaebacteria**: Their cell walls are distinct but do not resemble a soap box.
- **Diatoms**: They have a unique cell wall structure made of silica and cellulose, forming two overlapping shells known as the epitheca (upper shell) and hypotheca (lower shell). This arrangement can resemble a soap box.
- **Dinoflagellates**: Their cell walls are made of cellulose plates but do not have the soap box structure.
- **Euglena**: They have a flexible pellicle instead of a rigid cell wall.

4. **Conclusion**: Based on the analysis, the organism that has a cell wall resembling a soap box is the **diatom**.

5. **Final Answer**: The correct answer is **B) Diatoms**.