Understanding Dichotomous Keys

What is the primary purpose of a dichotomous key?

• To determine the age of organisms

• To identify organisms by dividing them into subsets

• To measure the size of organisms

• To classify organisms based on their habitat

Which characteristic is used to distinguish the organism with a shell?

• Presence of a hard shell

• Presence of feathers

• Soft body

• Number of legs

What question would you ask to identify an organism with fur?

• Does the organism have fur?

• Does the organism have a hard shell?

• Does the organism have feathers?

• Does the organism have a trunk?

How many legs does an organism have if it is identified as a mantis?

• Four legs

• Six legs

• No legs

• Eight legs

Which organism is identified if it has a trunk?

• Mantis

• Spider

• Bull

• Elephant