IGCSE WJEC Biology: Common Errors & Model Answers | IGCSE WJEC 生物：易错题精讲

📚 IGCSE WJEC Biology: Common Errors & Model Answers | IGCSE WJEC 生物：易错题精讲

In IGCSE WJEC Biology, some questions consistently catch students out due to subtle wording, common misconceptions, or the need for precise terminology. This article assembles ten of the most frequently seen errors in WJEC past papers and provides clear explanations and model answers to help you avoid losing marks. By understanding these pitfalls, you can refine your exam technique and demonstrate the depth of biological understanding required for the top grades.

在 IGCSE WJEC 生物考试中，一些题目由于措辞微妙、常见误解或需要精确术语，常常让学生失分。本文整理了 WJEC 往年试卷中最常见的十个错误，并提供了清晰的解释和标准答案，帮助您避免丢分。通过理解这些陷阱，您可以完善答题技巧，并展现出获得高分所需的生物学理解深度。

1. Diffusion vs. Osmosis | 扩散与渗透的混淆

A typical WJEC question asks: ‘Explain how water enters a plant root hair cell.’ Many students write, ‘Water moves from a region of high water concentration to a region of low water concentration.’ This answer is incomplete and often loses marks because it fails to mention the partially permeable membrane and the concept of water potential. Osmosis must be defined as the net movement of water molecules from a region of higher water potential to a region of lower water potential through a partially permeable membrane.

一道典型的 WJEC 问题会问：“解释水如何进入植物根毛细胞。”许多学生会写：“水从高水浓度区域流向低水浓度区域。”这个答案不完整，且经常失分，因为没有提到半透膜和水势的概念。渗透必须定义为水分子经半透膜

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