O Levels Biology (5090)•5090/11/M/J/21

Explanation
Key Differences: Plant vs. Animal Cell Structures Steps:
- Recall plant cells have rigid cell walls for support, chloroplasts for photosynthesis, and large central sap vacuoles for storage and turgor.
- Note animal cells lack these; they have flexible cell membranes, cytoplasm, and nuclei but no cell walls, chloroplasts, or large vacuoles.
- Compare options: Identify structures unique to plants by eliminating those common to both cell types.
- Select the option listing only plant-specific features.
Why A is correct:
- Cell wall provides structural support (unique to plants), chloroplasts enable photosynthesis (absent in animals), and sap vacuole maintains cell pressure (large version only in plants).
Why the others are wrong:
- B: Cell membrane and cytoplasm are in both plant and animal cells.
- C: Cell membrane and cytoplasm are shared by both cell types.
- D: Cytoplasm and nucleus are present in animal cells too.
Final answer: A
Topic: Cell structure and function
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