生物是一门实验学科,影响实验结果的因素很多,我们怎样才能快速而准确地找出实验失败的原因呢?一、取材分析正确取材是实验成功的第一步。有的学生实验失败的原因往往是由于取材不正确而造成的,因此在进行实验分析时,首先应考虑取材是否正确。例如,在“观察植物细胞的有丝分裂”实验中,准确切取洋葱根尖生长部位是实验 Biology is an experimental subject, and there are many factors that affect the experimental results. How can we quickly and accurately find out the reasons for the failure of experiments? First, the correct sampling of material analysis is the first step to successful experiments. Some students’ experiments are often caused by incorrect materials. Therefore, when conducting experimental analysis, the first thing to consider is whether or not the materials are taken correctly. For example, in the “observe the mitosis of plant cells” experiment, it is experimentally accurate to cut the root tip of the onion.