📚 Year 7 CAIE Biology: Case Study Practical Drills | 案例分析与实战演练
Welcome to this collection of case studies designed for Year 7 CAIE Biology students. Through real-world scenarios, you will practise observation, analysis, and scientific reasoning. Each case study targets key topics such as cells, classification, ecology, and plant biology, helping you to apply textbook knowledge to practical situations. Let’s sharpen your investigation skills with step-by-step workouts.
欢迎来到为CAIE Year 7生物学生设计的案例分析合集。通过真实情境的练习，你将锻炼观察、分析和科学推理能力。每项案例都围绕细胞、分类、生态学和植物生物学等关键主题，帮你把课本知识应用到实际问题中。让我们通过逐步演练，提升你的探究技能。
1. The Pond Water Mystery | 池塘水之谜
Scenario: A Year 7 student took a water sample from a local pond and placed a drop on a microscope slide. Using a light microscope at ×400 magnification, she observed several types of tiny objects. She recorded her observations in a table.
情境：一名七年级学生从当地池塘取了水样，将一滴水放在显微镜载玻片上。她在400倍光学显微镜下观察到了几种微小的物体。她将观察结果记录在表格中。
Organism A: Oval shape, bright green, a single whip-like tail (flagellum) used for movement. No rigid cell wall could be seen, but many green discs (chloroplasts) were visible inside. It moved quickly.
生物
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