DENDROLOGY

Detailed explanation-1: -A dichotomous key is an important scientific tool, used to identify different organisms, based the organism’s observable traits. Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification.

Detailed explanation-2: -Dichotomous keys are a method used in taxonomy to categorize species. It is a form of a single-access key where the sequence and structure of identification steps are fixed by the author. At each point in the decision process, alternatives are offered, each leading to a result or a further choice.

Detailed explanation-3: -Dichotomous is a word that means “two parts” (remember that the prefix di-means “two”). A dichotomous key uses a series of statements, descriptions, or yes or no questions grouped into pairs, which eventually lead to the correct identity of a specimen or organism.

Detailed explanation-4: -For example, in tree identification, a dichotomous key might ask whether the tree has leaves or needles. The key then directs the user down one list of questions if the tree has leaves, and a different question list if it has needles.