Evidence for Evolution

Flashcards about evidence for evolution, plate tectonics, fossils, taxonomy, natural selection and adaptations.

What does the Theory of Plate Tectonics explain?

The theory that Earth's continents were once joined together in a giant landmass called Pangaea but have since drifted apart.

What does the Law of Superposition state about the age of rock layers?

The oldest layers are found at the bottom, and the youngest layers are found at the top.

How do fossils demonstrate that life forms have changed over time?

They show a progression from simple to more complex life forms over time.

What is the main idea of the Theory of Evolution?

Organisms gradually change and evolve over many generations.

How does comparative anatomy support the theory of evolution?

Helps prove the theory of evolution by comparing the anatomical structures of different organisms.

List the levels of biological classification (Taxonomy) from general to specific.

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

If two organisms are in the same class, must they also be in the same phylum?

No

What two factors drive evolution?

Natural selection + Genetic variation

How does natural selection cause species to adapt over time?

Species best suited to their environment will outcompete others for resources and pass on beneficial traits.

Which population, A or B, shows genetic variation?

Population B shows genetic variation.

Which population, A or B, would likely have a better chance to survive environmental changes?

Population B

Name the three types of adaptations.

structural, behavioral, and physiological

A long neck of a giraffe is an example of what kind of adaptation?

A structural adaptation

The ability to regulate body temperature is what kind of adaptation?

A physiological adaptation

The ability to build a nest for shelter is what kind of adaptation?

A behavioral adaptation

The ability to recognize a predator and run away is what kind of adaptation?

A behavioral adaptation

The needles of a pinecone is what kind of adaptation?

A structural adaptation

The ability to produce a toxic substance is what kind of adaptation?

A physiological adaptation