Evolution Quiz #1

Fossils are commonly found in

• sedimentary rock
• all kinds of rock
• granite
• loose sand

The fact that all organisms have DNA as their genetic material is evidence that 

• all organisms undergo natural selection.
• all organisms may have descended from a common ancestor.
• selectively breeding takes place every day.
• genetic resistance rarely occurs.

Charles Darwin puzzled over differences in the ______ of the different species of Galapagos finches.

• webbed feet
• beaks
• bone structure of the wings
• eye color

Darwin observed variations among individuals within a population, but he did not realize that these variations were caused by 

• interbreeding.
• differences in food.
• differences in genes.
• selective breeding.

What did scientists begin to realize in the 1800s?

• Earth was much larger than people had thought.
• Earth was much warmer than people had thought.
• Earth was much younger than people had thought.
• Earth was much older than people had thought.

What did Darwin do to learn about plants and animals?

• He took a trip around the world.
• He read books.
• He made up theories.
• He bought animals.

How many different species are there?

• dozens
• hundreds
• thousands
• millions

Why are many species no longer on Earth?

• They turned into fossils.
• They died out.
• They adapted.
• They turned into populations.

What do scientists think happens as populations change over time?

• Species stay the same.
• New species form.
• Fossils die out.
• Evolution stops.

What do we know about fossils found in newer layers of Earth?

• They are the oldest fossils.
• They are close relatives of organisms alive now.
• They are imprints.
• They are not really fossils yet.