Dichotomous Keys and Cladistics

What is the purpose of a dichotomous key?

• to find a common ancestor
• to show the evolution of organisms
• to see what organisms eat
• to identify organisms

A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?

• Juniper
• Pine
• Spruce
• Fir

What is the name of bird W?

• Certhidea
• Geospiza
• Camarhynchus
• Platyspiza

Tags

NGSS.MS-LS4-2

An illustration and a dichotomous key are given. What is the correct classification for this organism?

• Class Insecta
• Order Amblygygi
• Order Araneae
• Order Scorpiones

What is the name of bird Z?

• Certhidea
• Geospiza
• Camarhynchus
• Platyspiza

Tags

NGSS.MS-LS4-2

Using this dichotomous key, identify the name of the circled Fish, J.

• peacock flounder
• band-tail puffer
• trumpet fish
• spotted goat fish

Tags

NGSS.MS-LS4-2

What is this a picture of?

• Pedigree
• Cladogram
• Family Tree
• Oak Tree

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Cladograms are constructed by grouping organisms together based on their____________ characteristics.

• shared
• different
• similar
• opposite

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

According to this cladogram, sharks are MOST closely related to which organism? 

• Amphibians
• Ray finned fish
• Crocodiles
• Birds

Tags

NGSS.MS-LS4-2

Which two orgainsms have hair? 

• Sharks & Ray Finned Fish
• Primates & Rodents
• Birds & Crocodiles
• Rabbits & Birds

Tags

NGSS.4-LS1-1