How many choices does a dichotomous key provide?

Answer 1

A dichotomous key is an outline of a classification system that seeks to identify common organisms (usually trees, flowers, birds or other groups of similar organisms) by systematically evaluating individual characteristics. The name is derived from what it does - provides the instructions (key) for separating organisms into two ("di") groups and then subdividing those groups into two until only one organism is left in the group.

Answer 2

Dichotomous keys only use 2 choices out of simplicity. Think of it this way. If you were to chart the graph, it would look like an upside down tree of some sort. Now, if each branch made 5 other branches, after three questions there would be 5*5*5 or 125 different things the author will have to fill out. There arekeys that use more than two choices, and they are called

Answer 3

A dichotomous key provides two choices at each step, leading the user to the correct identification by making a series of yes/no decisions based on the key's characteristics.

Answer 4

That's what dichotomous means. If it offered more choices it wouldn't be dichotomous.

Answer 5

two.. its called DIchotomous for a reason.. di implies the fact that it only has 2 choices.. (di means 2)

Answer 6

The sun was hot and so was the sky. ~Dedee

Answer 7

two