Classification and Evolution Review

Where the better adapted organisms survive to pass traits along to offspring.

• Evolution

• Natural Selection

• Extinction

• Artifical Selection

Natural selection is when ____________ decides who survives and who doesn't

• nature

• humans

• animals

• years

Change over time

• Natural Selection

• Selective Breeding

• Homeostasis

• Evolution

Which best describes mutations?

• Always helpful

• Always harmful

• Can be helpful or harmful

• Always neutral

Structures with the same parts have different functions; suggests that organisms share a common ancestry

• vestigial structures

• homologous structures

• adaptive radiation

• fossil

Study of embryos of various organisms to show a common ancestor because of similarities in development

• natural selection

• embryology

• speciation

• evolution

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

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

What type of structures are these?

• homologous

• vestigial 

• analogous

• fossil

Whales are aquatic mammals that contain a pelvis (hip) bone. Even though it does not aid in its movement, the function must have been used by a common ancestor of the whale. Thus, the pelvis is referred to as a(n)

• vestigial structure

• analogous structure

• homologous structure