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WorksheetsPhylogenetic Trees AP Biology
Total questions: 15
Worksheet time: 15mins
According to this cladogram, primates are most closely related to:
amphibians
rodents and rabbits
crocodiles
birds
Based on the characteristics in the cladogram, which organism would fit the best in the B position?
Two organisms that are closely related would have:
very similar DNA sequence.
exactly the same DNA sequences.
no proteins in common.
completely different DNA sequences.
According to this phylogenetic tree, which species is the least related out of all pictured?
fish
frog
salamander
human
Which two groups of organisms have the MOST genetic DIFFERENCES?
rotifers and nematodes
mollusks and annelids
mollusks and arthropods
echinoderms and chordates
The diagram shows a cladogram of six species based on amino acid similarities. Which two species are MOST CLOSELY related?
I and II
II and IV
I and V
V and VI
Which species is most closely related to Taxidea taxus?
Lutra lutra
Panthera pardus
Canis latrans
Canis lupus
Based on the phylogenetic tree, what organism is the human most closely related to?
fish
mouse
salamander
human
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 amphibians, birds, prosimians and humans all have in common? Check all that apply.
hair
endothermic
Eukaryotic
tetrapod
vertebrate
Based on the characteristics in the cladogram, which organism would fit the best in the D position?
Which trait should go where A is on the cladogram?
eyes
feet
lips
hat
What is a phylogenetic tree used for in biology?
To illustrate the evolutionary relationships among various species.
To measure the genetic distance between two individuals.
To determine the age of fossils.
To classify organisms based on their physical characteristics.
Which of the following best describes a monophyletic group in a phylogenetic tree?
A group that includes an ancestor and all of its descendants.
A group that includes species with similar physical traits but different ancestors.
A group that includes an ancestor and some of its descendants.
A group that includes species from different evolutionary branches.
In a phylogenetic tree, what does a node represent?
A common ancestor shared by the descendant lineages.
The point where two species become genetically identical.
The geographical location where a species was discovered.
The time period when a species went extinct.
