Unit Test Answers

In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information?

Fossils provide scientists with evidence that allows them to hypothesize how living organisms have evolved over time. Tiktaalik roseae was a unique organism that has been nicknamed the “fishapod” because it is believed to be a species had traits of both fish and tetrapods, the first four-legged animals.Which evidence would scientist use to make the connection between ancestry of fish and tetrapods using Tiktaalik roseae?

Which statement best describes how Carl Woese changed the system of classification?

What are the three domains of the modern classification system?

According to Darwin’s theory of evolution, in which order do the steps of natural selection happen?

Which is the correct written form of the scientific name that uses the rules of binomial nomenclature?

Which characteristic of potassium makes it useful for dating rocks?

Which of these are most likely homologous structures? bat wing dragonfly wing Tyrannosaurus arm

Four students are trying to summarize how scientists classify organisms, and are discussing whose answer is best. This chart shows the four students’ attempts.

What did Darwin think about Earth and life while he was forming his theory of evolution?

Which statement accurately describes a half-life?

The diagram illustrates radioactive decay.

Darwin’s finches evolved on an island. What is the main reason that islands often provide good examples of evolution?

Why do a chicken embryo and a cow embryo look very similar even though the adults do not?

Which is an example of temporal isolation?