10 Questions
We prefer the most complex tree when constructing a phylogeny.
False
The most parsimonious tree is the one that requires the fewest evolutionary changes to explain the observed data.
True
A polyphyletic group includes the most recent common ancestor and all of its descendants.
False
An apomorphy is a characteristic that is shared by two or more taxa and inherited from a common ancestor.
False
The fossil record has no limitations or biases, providing a complete and accurate representation of past life forms.
False
What is the significance of the End-Cretaceous mass extinction event?
It marked the extinction of dinosaurs and many other species
Why is the End-Cretaceous mass extinction event considered a significant turning point in Earth's history?
It marked the beginning of the Cenozoic Era
What is the impact of the End-Cretaceous mass extinction event on the fossil record?
It caused a loss of many existing species, leading to gaps in the fossil record
How did the End-Cretaceous mass extinction affect terrestrial ecosystems?
It triggered widespread wildfires and deforestation
What role did the End-Cretaceous mass extinction event play in shaping the evolution of mammals?
It led to the diversification and expansion of mammalian species
Test your knowledge on fossil formation, limitations of the fossil record, mass extinctions, phylogeny, and phylogenetic trees. Be prepared to define fossils, describe mass extinctions, and identify different parts of a phylogenetic tree.
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