Unit 5 Review

A ____________ is a group of organisms that can interbreed and produce fertile offspring.

• species

• animal

A chimp and a gorilla have common ancestors, but cannot mate and produce offspring. What is this an example of?

• Speciation

• Faulty logic

Charles Darwin's contribution to science was his explanation of how species evolve (or change).

• True

• False

True or false: The observation that fossils of ancient organisms differ from modern life supports the hypothesis that life changes over time.

• True

• False

What do Darwin and Lamarck have in common?

• They both tried to explain evolution.

• They both went to the Galapagos.

• They both like pizza.

• They both enjoyed studying birds.

According to science, which of the following has the organisms in the correct order from oldest to most recent?

• Cyanobacteria, trilobite, dinosaur, woolly mammoth

• Woolly mammoth, trilobite, dinosaur, cyanobateria

• Dinosaur, cyanobacteria, trilobite, woolly mammoth

In 1953, a scientist named Miller discovered something that helped explain the origins of life on Earth. What was it?

• He found that the chemicals that form the conditions for life to form are only found on Earth.

• He found that the first organism was a trilobite and not bacteria, as was previously thought.

Which gas, that is essential for life, was originally absent from Earth's atmosphere?

• oxygen

• carbon dioxide

This gas, which is used by cyanobacteria during photosynthesis, was present in Earth's early atmosphere.

• carbon dioxide

• oxygen

Which of these concepts supports the idea that life on Earth has changed over time?

• Fossil record

• Species

• Interspecies

• Trilobite