Designing the Dichotomous Key
When designing a dichotomous key, each level represents 1 step in your logic/questioning. The “di” in the word dichotomous means “two”: yes or no. The key is like an upside down tree. At each level, ask a yes/no question. The “yes” should lead the questioning/logic in one direction/branch; the “no” should lead the questioning/logic towards another direction.
See this example.
