Cell wall is absent in which one of the following organisms?
- A. Bacteria
- B. Diatom
- C. Mushroom
- D. Tapeworm ✓
Correct Answer: D. Tapeworm
Explanation
Tapeworms belong to the animal kingdom (Platyhelminthes). Animal cells lack a cell wall, whereas bacteria, diatoms (algae), and mushrooms (fungi) possess cell walls.
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