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In which of the following the cell wall ...

In which of the following the cell wall has stiff cellulose plate on the outer surface-

A

Dinoflagellates

B

Desmids

C

Diatoms

D

Euglenoids

Text Solution

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The correct Answer is:
To solve the question regarding which organism has a cell wall with stiff cellulose plates on the outer surface, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Question**: The question asks for an organism that has a cell wall featuring stiff cellulose plates on its outer surface. 2. **Review the Options**: The options provided are: - A) Dinoflagellate - B) Dasmide - C) Diatom - D) Euglenoid 3. **Analyze Each Option**: - **Dinoflagellate**: These are microscopic algae known for their unique cell structure. They possess a cell wall that has stiff cellulose plates on the outer surface. - **Dasmide**: This term is not commonly used in biological classification and does not refer to a known group with cellulose plates. - **Diatom**: Diatoms have a silica-based cell wall, not cellulose. - **Euglenoid**: Euglenoids have a flexible pellicle rather than a rigid cell wall made of cellulose. 4. **Identify the Correct Answer**: Based on the analysis, Dinoflagellates are the only organisms listed that have a cell wall with stiff cellulose plates on the outer surface. 5. **Conclusion**: Therefore, the correct answer to the question is **A) Dinoflagellate**.
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