摘要:Abstract The aim of this research brought to light alternative understanding regarding "biodiversity concept" of pre-service teacher enrolled in different departments at education faculty in terms of variant variables. The descriptive methods based on quantitative research paradigms were used in this research. With aim of determining the cognitive levels of university students related to "biodiversity concept" the measuring instruments developed by Selvi (2007) utilizing from literature were applied to pre-service students. The measurement instruments were applied to a total of 585 pre-service teachers in the departments of Science Education, Social Science Education, Mathematics Education and Primary Education of Education Faculty, Recep Tayyip Erdogan University. T-test and one-way variance were used in data analyses. In addition to these to determine the direction of the difference were also used the Scheffe test from post-hoc tests. In a result of analysis, it was seen that the pre-service teacher had some cognitive misconceptions regarding biodiversity concept. According to the data being obtained this study, family and social environmental are knowledge resources in which cognitive scores are the lowest. As a result, this research brought to light that pre-service teacher thought as future's teachers in different branches had not cognitive understanding on biodiversity concept on enough level. Key Words: Prospective teachers, biodiversity, cognitive understandings