biology - chp 18 - dichotomous key - powerpoint
TRANSCRIPT
![Page 1: Biology - Chp 18 - Dichotomous Key - PowerPoint](https://reader035.vdocuments.site/reader035/viewer/2022062220/555d118bd8b42ab2228b492a/html5/thumbnails/1.jpg)
Dichotomous Key Notes
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Dichotomous Key• Key used to identify an
organism by choosing from pairs of descriptions of characteristics of the organism
![Page 3: Biology - Chp 18 - Dichotomous Key - PowerPoint](https://reader035.vdocuments.site/reader035/viewer/2022062220/555d118bd8b42ab2228b492a/html5/thumbnails/3.jpg)
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
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Practice with this picture
![Page 5: Biology - Chp 18 - Dichotomous Key - PowerPoint](https://reader035.vdocuments.site/reader035/viewer/2022062220/555d118bd8b42ab2228b492a/html5/thumbnails/5.jpg)
Jay A
![Page 6: Biology - Chp 18 - Dichotomous Key - PowerPoint](https://reader035.vdocuments.site/reader035/viewer/2022062220/555d118bd8b42ab2228b492a/html5/thumbnails/6.jpg)
Jay B