Diversity of Life

What is the fossil record?

• Are the remains or evidence of once-living organisms

• Is the change over time in populations of related organisms

• Is made up of all the fossils ever discovered on Earth

• Occurs when the last individual organism of a species dies

What can fossils tell us about the past? (Check all that apply)

• Which organisms used to live on Earth and what they looked like

• How the environment has changed

• How organisms alive today have changed and adapted over time

• How DNA is structured

Which type of rock are most fossils found?

• sedimentary rock

• metamorphic rock

• igneous rock

• fossils

Which rock layer contains the oldest fossils?

• F

• E

• C

• B

• A

Between the sedimentary rocks, there are layers of ______________rock that contain radioactive particles used to determine the ____________ of the rock so you can tell the age of rock layers above or below that have fossils in them.

• Metamorphic

  absolute age

• Metamorphic

  relative age

• Igneous

  absolute age

• Igneous

  relative age

Humans, birds, whales and lizards all have similar arm bones. What do evolutionists consider is the reason for this?

• The function of these bones is the same in all animals

• They live in similar environments

• They have a common ancestor

• All organisms resemble humans

Which evidence for evolution is shown here?

• similarities in bone structure

• similarities in size

• similarities in embryos

• differences in development

Which of the following represent evidence for evolutionary change?

(Select all that apply)

• The fossil record

• Written observations from individuals in prehistoric periods

• Genetic information (DNA)

• Anatomical similarities

• Natural selection

Which of these statements is true about DNA and evolution?

• Two species with very similar DNA likely evolved from a common ancestor.

• Each living species has DNA made from different ingredients, showing that organisms have evolved.

• DNA from related species is identical, providing evidence that all organisms have evolved in the same way.

What are the building blocks for DNA?

• carbohydrates

• nucleotides

• lipids

• proteins