Dichotomous Keys

1
Dichotomous Keys

• Dichotomous Key A series of paired opposite
  statements that describe physical characteristics
  of different organisms.
• They are based on morphological classification
  form and structure of an organism.
• These statements describe the presence or absence
  of certain visible characteristics

2

• Each set of choices are arranged so that each
  step produces smaller subsets (narrows more
  specific)
• Always begin at ONE every time for each organism
  you are trying to identify.
• Decide which statement best fits the picture and
  then follow what it says to doeither move to
  another number step or it will reveal its
  identity.

3

• Has pointed ears .go to 3
• Has rounded ears go to 2
• 2. (more statements.)
• (more statements.)
• (more statements.)
• Engages in waving behavior .WalaWala
• Does not engage in waving behavior..go to 6