#MAKE A DICHOTOMOUS KEY HOW TO#
#MAKE A DICHOTOMOUS KEY CRACKER#
#MAKE A DICHOTOMOUS KEY SERIES#

#MAKE A DICHOTOMOUS KEY HOW TO#

Our dichotomous key is complete!ġ1 I know how to make one.

#MAKE A DICHOTOMOUS KEY CRACKER#

The second statement “has no drive-thru” matches three restaurants: Red Lobster Chili’s Cracker Barrel So we need another way to divide them: Go to #3Ĩ So how do I make my own dichotomous key?įor #2, we need to divide McDonalds and Chick Fil A serves hamburgers doesn’t serve hamburgers Each statement has exactly one match, so we are done with those two restaurants serves hamburgers = McDonalds doesn’t serve hamburgers = Chick Fil Aĩ So how do I make my own dichotomous key?įor #3, we need to divide Red Lobster, Chili’s, and Cracker Barrel Serves breakfast Doesn’t serve breakfast One statement has exactly one match Serves breakfast = Cracker Barrel The other statement has two matches, so we need another category Doesn’t serve breakfast = Go to #4ġ0 So how do I make my own dichotomous key?įor #4, we need to separate Chili’s and Red Lobster Serves whole lobsters= Red Lobster Doesn’t serve whole lobster = Chili’s Now all five restaurants are in groups by themselves.

The word dichotomous comes from two Greek words that mean divide in two parts. A dichotomous key is guide, sort of like a map of characteristics, to lead the user to the correct identification of the plant.

So in our example, the first statement “has a drive-thru” matches two of the restaurants: McDonalds Chick Fil A So it needs another way to divide them Go to #2ħ So how do I make my own dichotomous key? Make a Dichotomous Key Making your own plant dichotomous key is a little like playing twenty questions to identify a plant.

#MAKE A DICHOTOMOUS KEY SERIES#

Dichotomous keys look like flow charts, and feature a series of images and text with two choices branching off at each step: you choose the one that fits the organism you want to identify. How many items match that statement? If it is one, write the name of the item If it is more than one, you need another way to divide the group Go to #(next available number)Ħ So how do I make my own dichotomous key? A dichotomous key is an important tool used by biologists to identify a given species or organism, and crop up in the GCSE biology syllabus. Read the statement and look at the things that you are trying to classify. When one question is answered, the key directs the user as to what question to ask next. Typically, a dichotomous key for identifying a particular type of object consists of a specific series of questions. Group the restaurants into two groups those with drive-thrus those without Write paired statements, one reflecting each group type those with drive-thrus = “has a drive-thru” those without drive-thrus = “has no drive-thru”ĥ So how do I make my own dichotomous key?Įach statement is like a map. A dichotomous key is a tool created by scientists to help scientists and laypeople identify objects and organisms. Make a list of things that you want to classify: Let’s classify restaurants Red Lobster McDonalds Chili’s Cracker Barrel Chick Fil AĤ So how do I make my own dichotomous key? A key for the identification of organisms using paired statements These statements must be opposites For example, if the first statement is “has blue eyes,” then the paired statement would be: Has green/brown/hazel eyes Does not have blue eyesģ So how do I make my own dichotomous key? To make a dichotomous key, you need to list down the characteristics of an organism, divide the question into two parts, then subdivide the questions even.

Make a dichotomous key