What is adichotomous key?

A dichotomous key is a tool used in Biology and other sciences for identifying organisms or objects based on a series of choices that lead the user to the correct name or classification. Each step in the key presents two contrasting statements or questions (hence "dichotomous"), allowing the user to narrow down the possibilities by selecting the option that applies to the specimen in question. This systematic approach helps in the accurate identification of species or items in a structured manner.