Estudo do teste Allium cepa como atividade experimental no ensino de química orgânica

Abstract

The present study is an experimental proposal for the teaching of science and chemistry which integrates generative themes and interdisciplinarity along the disciplines of biology and mathematics. The methodological proposal is given through a bioassay with the plant species Allium cepa, which allows us to analyze the growth of its roots in solution. In this case we used tobacco samples in aqueous solutions at different concentrations (1000, 500, 200, 100, 50 and 20 mg / 50 mL) to evaluate the development of the roots of allium cepa observing how much the smoke is harmful to this organism. The results obtained were promising for the execution of the experiment and for encouraging class discussions. The teaching-learning proposal, developed in this work, presents the concepts that can be approached in an interdisciplinary way using the generative theme smoke and this experimental activity.