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WorksheetsCladogram
Total questions: 15
Worksheet time: 15mins
According to the cladogram, which organism is most distantly related to the human?
crayfish
rat
perch
frog
On the cladogram, which organism is the closest relative of the human?
Frog
Hare
Caiman
Parrot
A common ancestor for both A and E could be at position __.
1
2
3
4
Which group of animals on this tree are most closely related to birds?
Saurischian dinosaurs
Ornithischian dinosaurs
Crocodiles
None of these are related to birds
The diagram below represents possible genetic relationships between groups of organisms.
Which statement is a valid conclusion that can be drawn from the diagram?
Insects are more complex than mammals.
Earthworms and sea stars have a common ancestor.
Snails appeared on Earth before corals.
Sponges were the last new species to appear on Earth.
What is the common ancestor of Letters A, B, C, D, E?
1
2
3
4
Which species is most closely related to species D?
A
B
C
The two species that are closely related to each other are __.
A and B
B and C
C and D
D and E
A common ancestor for both A and E could be at position __.
1
2
3
4
What number is the common ancestor of C and D
1
2
3
4
Which species is most closely related to E?
A
B
C
D
F
Which lettered circle (or circles) represents a common ancestor of flowering plants and gymnosperms?
F
E
D
C
What is a cladogram?
A diagram that shows the evolutionary relationships among a group of organisms
A chart that displays the genetic code of an organism
A graph that represents the population growth of a species
A table that lists the physical characteristics of different species
Which of the following best describes the purpose of a cladogram in scientific research?
To predict future evolutionary changes
To illustrate the evolutionary pathways and relationships between different species
To measure the genetic similarity between individuals
To calculate the age of fossils
In a cladogram, what does a node represent?
A common ancestor shared by the descendant species
The extinction of a species
The geographical location of a species
The genetic mutation rate of a species
