Biological Evidence and the Fossil Record — Unit test Answers
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Which is an example of temporal isolation?
A
flowers that bloom in different monthsB
birds that have different mating callsC
fruit flies that mate in different locationsD
squirrels that have different fur colors22
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Consider the cladogram.Which is the best description of the two organisms highlighted in orange?
A
They are separated by two nodes.B
They share a recent common ancestor.C
They belong to the same species.D
They are ancestors of each other.23
Populations of organisms that exhibit a high degree of variation have a greater chance for survival than populations of organisms that show little variation. This statement is
A
always true.B
usually true.C
rarely true.D
never true.24
Variations within a species are an important part of Charles Darwin's theory of evolution. Which example can be explained by individual variation?
A
The food source in a lake is not enough to support the bass population, but it can support the trout.B
A population of brown bears has doubled in the past 10 years as its habitat size has increased.C
Owls and foxes compete fiercely against each other for small rodents in their habitat.D
Brightly colored cardinals are better able to survive and to reproduce than darker cardinals.Did you find these answers helpful?
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