1 / 5

Using a Dichotomous Key

Using a Dichotomous Key. 6-1.3. Meaning of Dichotomous. The word dichotomous means “divided into parts” A dichotomous key will always give you two choices in each step. Example: Is this person a boy or a girl? After answering the question, divide the groups. Let’s practice.

damita
Download Presentation

Using a Dichotomous Key

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Using a Dichotomous Key 6-1.3

  2. Meaning of Dichotomous • The word dichotomous means “divided into parts” • A dichotomous key will always give you two choices in each step. Example: Is this person a boy or a girl? • After answering the question, divide the groups.

  3. Let’s practice • I need eight student volunteers. (You will be divided based on physical features) • I need two people to work together to classify. • Remember, ALWAYS separate into two groups and work down from there. • You will do this until each student is standing alone.

  4. Uses? • A dichotomous key is a special identification key that uses a series of paired characteristics that leads to the identification of an organism, object, or material.

  5. More practice • Classifying Beans 1a. Bean round----------Garbonzo bean 1b. Bean elliptical or oblong---------Go to 2 2a. Bean white---------White Northern 2b. Bean has dark pigments--------Go to 3 3a. Bean evenly pigmented--------Go to 4 3b. Bean pigmentation mottled------Pinto Bean 4a. Bean black--------Black Bean 4b. Bean reddish-brown--------Kidney Bean

More Related