Identification of Misconceptions about Biodiversity and Protist Topics Using Three-Tier Multiple Choice Diagnostic Tests for Class X State Senior High School Students in Kampar Regency

This study aims to identify students' misconceptions on the subject of Biodiversity and Protists. This type of research is descriptive quantitative. The sampling technique used in this study was purposive sampling, considering that students who had studied the material on Biological Diversity and Protists, had not identified misconceptions, and the geographical location of the research site. The research subjects were students of class X SMA Negeri in Kampar Regency, with a total sample of 405 students. The instrument used in the study was a Three-Tier Multiple Choice Diagnostic Test adopted from Yunanda et al., (2019), which consisted of 15 questions on Biodiversity material and 15 questions on Protista material. The study results concluded that the average Percentage of students who had misconceptions about the material on Biodiversity was 32.20% which was included in the medium category. The average Percentage of misconceptions about the material Protista was 31.09% which was included in the medium category. In Biodiversity, the highest misconception occurs in the indicator of Efforts to Preserve Biodiversity as much as 57.04%. In the Protist material, the highest misconception was found in the indicator of the classification of protists similar to animals, plants, and fungi by 49.38%. In the material on Biological Diversity and Protists, many students experience false-negative misconceptions. Students are wrong in answering the first tier and correctly answering the second tier where the information possessed by students is little