Unit Test — Unit test Answers
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Why are the Miller-Urey experiments essential to the theory of evolution?
A
They showed that life can only come from life.B
They showed that electricity can create life.C
They showed how organic molecules could be made from Earth's early atmosphere.D
They showed the role that natural selection played in the evolution of modern day organisms.23
Consider the two male oryx that are shown below.Which of Charles Darwin’s main points is depicted in the image?
A
Organisms within a population compete with each other to survive.B
Over time, beneficial variations will be passed on to future generations.C
More offspring are produced than can be supported by an environment.D
All organisms within a population have an equal chance for survival.24
Babies with very low or very high birth weight are less likely to survive. The graph shows the percentage of babies born at different weights.Which statement is a valid claim that could be made using the data in the graph?
A
Directional selection is occurring because the graph favors an extreme.B
Stabilizing selection is occurring because the average is favored.C
Disruptive selection is occurring because the two extremes are favored.D
Biodiversity variation is occurring because there is an increase in trait variation.25
Darwin hypothesized that new species could appear gradually through small changes in an ancestral species. Which observation that he made about finches most supports that hypothesis?
A
The finches all ate the same materials as the mainland population.B
The finches were all relatively small compared to the mainland population.C
The finches all appeared to be related but differed from the mainland population.D
The finches were identical to the mainland population.Did you find these answers helpful?
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