Dichotomous Key

1
Dichotomous Key

• Using Observable Characteristics
• to Identify Objects

2
What is a dichotomous key?

• A dichotomous key is a tool that allows the user
  to determine the identity of items in the natural
  world, such as trees, wildflowers, mammals,
  reptiles, rocks, and fish. Keys consist of a
  series of choices that lead the user to the
  correct name of a given item. "Dichotomous" means
  "divided into two parts". Therefore, dichotomous
  keys always give two choices in each step.

3
Use a dichotomous key to identify these
individuals.
Pick an individual to identify, When you are
ready click start.
Start
4
Is the individual male or female?
Male
Female
5
Is the individual wearing a hat?
Hat
No Hat
6
Is the individual in the military?
Military
Not Military
7
Is he wearing a dress uniform or a camouflage
uniform?
Dress Uniform
Camouflage Uniform
8
Introducing
Arnold

• He is a man wearing a hat and a military dress
  uniform.

Return to Start
9
Introducing
Hector

• He is a man wearing a hat and a camouflage
  military uniform.

Return to Start
10
Introducing
Greg

• He is a man wearing a hat, but not wearing a
  military uniform.

Return to Start
11
Does the individual have facial hair or is he
clean shaven?
Facial Hair
Clean Shaven
12
Is the individual wearing black?
Wearing Black
Not Wearing Black
13
What is the individual wearing?
Suit
Jeans
14
Introducing
Reggie

• He is a man with facial hair, wearing a black
  suit, but not wearing a hat.

Return to Start
15
Introducing
Hugo

• He is a man with facial hair, wearing a black
  shirt and jeans, but not wearing a hat.

Return to Start
16
Introducing
Bill

• He is a man with facial hair who is not wearing
  black or a hat.

Return to Start
17
What is the individual wearing?
Shorts
Pants
18
Introducing
Jack

• He is a clean shaven man who is wearing shorts,
  but not black or a hat.

Return to Start
19
Introducing
Kurt

• He is a clean shaven man who is wearing pants,
  but not black or a hat.

Return to Start
20
Is the individual wearing a hat?
Hat
No Hat
21
Is the individual wearing purple?
Wearing Purple
Not Wearing Purple
22
What is the individual wearing
Green Boa and Hat
Red Boa and Hat
23
Introducing
Doris

• She is wearing a purple dress and green boa and
  hat.

Return to Start
24
Does the individual have a purse?
Purse
No Purse
25
Introducing
Erin

• She is wearing a purple dress and red purse, boa,
  and hat.

Return to Start
26
Introducing
Rhonda

• She is wearing a purple dress and red boa and hat.

Return to Start
27
Introducing
Gail

• She is wearing a hat, but not wearing purple.

Return to Start
28
What is the individual wearing?
Pants
Skirt
29
Introducing
Jenny

• She is wearing pants, but not a hat.

Return to Start
30
What color boots is the individual wearing?
Red
Black
31
Introducing
Mary

• She is wearing a skirt and red boots, but not a
  hat.

Return to Start
32
Introducing
Beth

• She is wearing a skirt and black boots, but not a
  hat.

Return to Start