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WorksheetsCladogram Lesson
Total questions: 15
Worksheet time: 15mins
True or False: On a cladogram (branching diagram), organisms on branches above each characteristic have that characteristic
True
False
What number is the common ancestor of C and D
1
2
4
According to this phylogenetic tree, which creature is the least related out of all pictured?
Fish
Frog
Salamander
Human
What trait separates sharks from ray-finned fish?
Vertebrae
Bony skeleton
Four limbs
None
A clade contains
all the organisms with similar appearances
organisms living within the same ecosystem
an ancestral species and all the organisms that came before it
an ancestral species and all its descendants
What is the common ancestor of Letters C and E?
1
2
3
4
Where would you put the new species "H"?
line off of line "G"
line off of line "A"
make a whole new line between "A" and "F"
line off of line "D"
Are cladograms a hypothesis or a fact?
Absolute fact
Hypothesis (a guess)
What would be the characteristic that separates letter "G" and all the letters after it?
Mouth
Red eyes
does not have 4 arrows
More than 4 arrows
Who do you think F is more related to?
A
E
Of "A", "F", and "E", which is the oldest?
A
F
E
Which of the following best describes a cladogram?
A diagram that shows the evolutionary relationships among a group of organisms
A chart that lists all known species in a particular ecosystem
A graph that measures the population growth of a species over time
A table that compares the physical characteristics of different species
In a cladogram, what does a node represent?
The extinction of a species
A common ancestor shared by the descendant species
The geographical location of a species
The time period when a species first appeared
Which of the following is a real-world application of cladograms?
Predicting weather patterns
Determining the evolutionary relationships between species
Calculating the speed of an animal
Measuring the height of trees in a forest
True or False: In a cladogram, the length of the branches always indicates the time elapsed since the last common ancestor.
True
False
