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WorksheetsAP Phylogenetic Trees and Cladograms
Total questions: 13
Worksheet time: 7mins
What is phylogeny?
the study of all phyla in the classification system
the evolutionary history of a species or taxonomic group
the study of plants
the study of animals
According to the diagram, what is the common ancestor of ALL organisms on the phylogenetic tree?
B
C
D
E
Using the diagram, is organism 4 MORE closely related to organism 3 or 5?
3
5
According to the diagram, what was the last common ancestor of organisms 2 and 3?
A
B
C
D
According to the diagram, what was the last common ancestor of organisms 1 and 5?
B
C
D
E
According to the diagram, which organism is LEAST related to the others?
5
4
3
2
According to the cladogram, which of the following is NOT a derived character?
light bones
Allosaurus
down feathers
3-toed foot; wishbone
Which group on the cladogram arose FIRST?
Theropods
Allosaurus
Robin
Velociraptor
Do theropods have light bones?
yes
no
Does Allosaurus have light bones?
yes
no
Which traits are shared by Archaeopteryx and (Robin) modern birds (select 3)?
flight feathers; arms as long as legs
feathers with shaft, veins, and barbs
down feathers
3-toed foot; wishbone
Which groups have feathers (select 3)?
Robin (modern birds)
Velociraptor
Archaeopteryx
Sinornis
What are the derived characters of Sinornis (select 2)?
down feathers
3-toed foot; wishbone
light bones
feathers with shaft, veins, and barbs
