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Euglenoids have ....... instead of cell ...

Euglenoids have ....... instead of cell wall.

A

Siliceous frustule

B

Pellicle

C

Capsule

D

Cell membrane

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Organism**: The question asks about Euglenoids, which belong to the Kingdom Protista and are unicellular eukaryotes. 2. **Understand the Structure**: In Euglenoids, specifically in the genus Euglena, the typical cell wall found in many other organisms is absent. 3. **Identify the Replacement Structure**: Instead of a cell wall, Euglenoids have a structure that covers their cell. This structure is not a traditional cell wall but serves a similar protective and supportive function. 4. **Name the Structure**: The covering structure in Euglenoids is called a "pellicle." The pellicle is a thin, flexible layer that provides shape and support to the cell. 5. **Clarify the Composition**: The pellicle is a protein-rich layer, which distinguishes it from other types of cell coverings, such as the siliceous frustule found in diatoms or capsules found in some bacteria. 6. **Conclude the Answer**: Therefore, the correct answer to the question "Euglenoids have ....... instead of cell wall" is "pellicle." **Final Answer**: Euglenoids have **pellicle** instead of a cell wall. ---
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