It explains why students lost marks. For example, it might say, "Many candidates failed to mention that the Benedict's solution needed to be heated." This provides insight that a simple "Answer: Glucose" list cannot.
For enzyme experiments (like catalase), repeating the experiment is essential to ensure the reliability of the results. Variation: o level biology practical 2020 answers
While the exact 2020 O Level Biology Practical answers are board-specific, the patterns of questions and expected answers align closely with standard syllabus topics: food tests, osmosis, enzymes, microscopy, and transpiration. To score highly: It explains why students lost marks
Using clear headers and appropriate units (e.g., seconds for time, for concentration). Accuracy Measures: it might say