Instructions on how to use the key:
The purpose of using the key is to name the creature shown. Stick with one character until the name is reached, then go to the next.
• A dichotomous key gives instructions in pairs of statements.
• With each character, start with the first pair of statements.
• Decide which description describes your chosen character best and follow the line to the right.
• There will either be a number or a name. If it is a number, go to the pair of steps with that
number, for example, if the number is 3, go to steps 3a and 3b.
• If the line ends in a name you have identified your character, so write it down by the creature.
• Continue until each creature has a name. There is only one creature per name, and no creature has two names.
Click here for the exercise. Note ANSWERS ON THE LAST PAGE of the PDF. NO CHEATING!
The purpose of using the key is to name the creature shown. Stick with one character until the name is reached, then go to the next.
• A dichotomous key gives instructions in pairs of statements.
• With each character, start with the first pair of statements.
• Decide which description describes your chosen character best and follow the line to the right.
• There will either be a number or a name. If it is a number, go to the pair of steps with that
number, for example, if the number is 3, go to steps 3a and 3b.
• If the line ends in a name you have identified your character, so write it down by the creature.
• Continue until each creature has a name. There is only one creature per name, and no creature has two names.
Click here for the exercise. Note ANSWERS ON THE LAST PAGE of the PDF. NO CHEATING!
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