1. Dichotomous Key
Notes

2. Dichotomous Key
• Key used to identify an
organism by choosing from
pairs of descriptions of
characteristics of the organism

3. Rules for using a dichotomous key
1. Always start at the top
2. Compare one organism at a
time, read the choice and decide
if yes or no.
3. Follow next step and eliminate
options until its narrowed down to
just one

4. Practice with this picture

5. Jay A

6. Jay B