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Misconception becomes a serious problem in learning science, because it can inhibit students in learning process. This research aims to identify misconceptions on the human and plant transportation systems. The research done on 8th grade in Indonesia amounted to 30 students. Data collection using a diagnostic test. Data analysis using quantitative descriptive. The results of this research obtained that 100% of students experience misconception on the human and plant transportation systems. The location of misconception of each student is different. The highest misconceptions identified in this research, namely: a) arteries that drain blood to the heart (73.3%); b) veins that drain blood from the heart (70.0%); c) place of oxygen and carbondioxide exchange occurs in the veins (66.7%); d) blood pressure in veins greater than in capillaries (63.3%); e) absorption of water and minerals occurs osmosis (76.7%); f) transport of photosynthesis process occurs by diffusion (66.7%); g) photosynthetic process occurs during the day (63.3%); and h) the process of evaporation of water through the leaves occurs in gutation (56.7%). The results of this research can be used as a reference to improve the learning process, to determine misconception level which causes student's difficulties in learning process, and reduce student misconceptions.

Diagnostic test; Misconception; The human and plant transportation System