Biology Unit 8B Test Retake

The changes of species over time

• Embryonic 
• Natural selection 
• Mimicry 
• Evolution 

What does Darwin's theory of evolution suggest?

• species change over time
• extinct species are not related to living species
• different species can interbreed
• animals that look alike are most closely related

Which is not evidence for evolution?

• many animals have homologous structures due to common ancestry
• Many animals have vestigial structures from an ancestor
• We can observe changes in life forms by observing the fossil record
• All of these are evidence for evolution

Which of the following is the collection of life's remains found in sedimentary rock?

• natural selection

• homologous structures

• Charles Darwin

• the fossil record

Which layer is the youngest

• 1
• 2
• 3
• 4

The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?

• Fossil A and C are the same age
  
• Fossil B is older than fossil C
• Fossils A is older than fossil B
• Fossil D is older than fossil C

How do fossils provide evidence that evolution has happened on Earth?

• Fossils show how the sizes of certain animals has changed drastically over millions of years
• Fossils show that some species have gone extinct
• Fossils show how life forms present today are different than those from the past
• Different sedimentary rock layers provide evidence for how the environment has changed over time

Structures are similar in appearance and function but not in structure?

• Vestigial

• Homologous

• Analogous

• Embryonic

Similar structures with different purposes found in different species are known as _____

• vestigial structures

• analogous structures

• homologous structures

• the fossil record

The picture shows a/an ___________

• homologous structure

• vestigial structure