What is the purpose of a dichotomous key?

A dichotomous key is a tool used for identifying and classifying organisms based on their characteristics. It is a series of choices between two alternatives, typically in the form of a question that helps narrow down the possible options until a specific identification is made. The purpose of a dichotomous key is to simplify the process of identifying an organism by breaking down its features into easily distinguishable categories. This allows users to make accurate classifications even if they are not experts in the field. Dichotomous keys are commonly used in the fields of biology, ecology, and taxonomy.