WorksheetsCladograms and Phylogenetics
Total questions: 15
Worksheet time: 15mins
All the animals to the right of the hagfish would have the common characteristic of -
Fur
Claws or nails
Lungs
Jaws
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.
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
What is the common ancestor of Letters A, B, C, D, E?
1
2
3
4
Using the cladogram, which two organisms are more closely related Lizards and Newts OR Lamreys and Sharks
Newts and Lizards
Lampreys and Sharks
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.
Which organism goes in the B position?
What is a phylogenetic tree used for?
To illustrate the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.
To show the geographical distribution of species across different continents.
To display the food chain and energy flow in an ecosystem.
To identify the genetic mutations within a single species.
Which of the following best describes a cladogram?
A diagram that shows the evolutionary relationships among a group of organisms.
A chart that displays the feeding relationships in an ecosystem.
A graph that represents the population growth of a species over time.
A table that lists the genetic sequences of different organisms.
In phylogenetics, what does the term 'monophyletic group' refer to?
A group of organisms that includes an ancestor and all of its descendants.
A group of organisms that share a common habitat but not a common ancestor.
A group of organisms that have similar physical characteristics but different ancestors.
A group of organisms that are genetically identical.
How can molecular data be used in constructing a phylogenetic tree?
By comparing DNA sequences to determine evolutionary relationships.
By analyzing the physical traits of organisms to find similarities.
By observing the behavior of organisms in their natural habitat.
By studying the fossil record to trace lineage.
What is the significance of branch length in a phylogenetic tree?
It represents the amount of genetic change over time.
It indicates the geographical distance between species.
It shows the number of offspring produced by a species.
It measures the lifespan of the species.
