Question 1(a)
Topic:
10 Marks
Describe the differences between an animal cell and a plant cell.
Official Marking Scheme & Model Answer
Model Answer / Key
Plant cells have a rigid cell wall made of cellulose and chloroplasts for photosynthesis. Animal cells lack these structures but contain centrioles. Plant cells typically have one large central vacuole, while animal cells have smaller, temporary vacuoles.
Examiner's Explanation
Focus on key biological terms like "emulsification", "turgidity", and "deoxygenated" to secure maximum marks.
Mark Allocation Criteria
- Presence of cell wall in plant cells and absence in animal cells
- Presence of large central vacuole in plant cells
- Presence of chloroplasts in plant cells for photosynthesis
- Animal cells have centrioles, plant cells do not
- Plant cells have a fixed rectangular shape, animal cells are irregular