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Worksheetscladograms
Total questions: 14
Worksheet time: 21mins
What is the human most closely related to?
Fish
mouse
Salamander
Human
According to this tree, which of these animal phyla are most closely related?
Arthropoda & Mollusca
Arthropoda & Chordata
Chordata & Mollusca
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 purpose of a cladogram?
To map the ancestral relationships and shared traits of different organisms.
To trace the inherited traits of a single species over time.
To check the likelihood of an offspring having a particular trait.
To monitor mutations that arise among different populations.
What do both the squirrel and lion have in common that the other animals do not?
They are both vertebrates
They both have lungs
They are both mammals
They both lose their canine teeth.
What do amphibians, birds, prosimians and humans all have in common? Check all that apply.
Hair
Endothermic
Eukaryotic
Tetrapod
Vertebrate
Which letter represents the most recent common ancestor of sponges and mushrooms?
A
B
C
D
E
Which trait should go where A is on the cladogram?
eyes
feet
lips
hat
Which organism goes in the B position?
According to the diagram, what is the common ancestor of ALL organisms on the phylogenetic tree?
B
C
D
E
What is the common ancestor of Letters A, B, C, D, E?
1
2
3
4
Which trait(s) do conifers have?
vascular tissue only
vascular tissue and seeds
vascular tissue, seeds and flowers
seeds only
Of the choices listed, which species is the oldest?
H
D
C
A
