7.11A Dichotomous Key

​7.11 A (S) Dichotomous Key

​A dichotomous key is a guide for identifying organisms using a series of paired descriptions.

​Steps	​Description	​
​1a	​Has legs	​go to 2
​1b	​Lacks legs	​go to 4
​2a	​3 pairs of legs	​insect
​2b	​4 or more pairs of legs	​go to 3
​3a	​Has antennae	​crustaceans
​3b	​Lacks antennae	​Arorchids