Final Exam

In a dichotomous key, organisms should be classified based on their

• diet

• habitat

• observable features

• sounds they make

Tags

NGSS.MS-LS4-2

Why do scientists use dichotomous keys?

• To arrange organisms based on habitat

• To determine evolutionary history

• To identify different organisms

• To analyse feeding habits

Which of the following is a centipede?

• 
• 
• 
• 

What feature does this dichotomous key use to identify organisms?

• Number of legs

• Body colour and pattern

• Presence of wings

• Surface features

If you were to make a dichotomous key to identify this organism, which option would NOT be used?

• Presence of webbed feet

• Presence of tail

• Fur on the body

• Ability to swim

• Absence of wings

Based on the dichotomous key, which bird is Certhidea? (Slender = thin; stout= round)

• Bird W

• Bird X

• Bird Y

• Bird Z

• A

• B

• C

• D

• A

• B

• C

• D

An example of a physical/structural adaptation is...

• a turtle hiding inside its shell

• The spikes on a porcupine fish

• a rabbit burrowing underground

• a viper biting when threatened

Tags

NGSS.4-LS1-1

An example of a behavioral adaptation is

• The long neck of a giraffe
• Penguins huddling together for warmth
• A camel's hump used to store water
• A polar bear's white fur used for camouflage