Name: ___________________________________________________Test Date: _____________
Test Review Sheet for Evolution
1. Scientists estimate that the Earth is ___________________ years old.
2. _______________ is defined as the gradual change in organisms over time.
Fossils:
3. What are fossils and where are fossils commonly found?
4. Where in the Earth would you most likely find an older fossil?
5. What is the fossil record?
Evidence that Supports the Theory of Evolution:
6. List the five pieces of evolutionary evidence.
i.
ii.
iii.
iv.
v.
Adaptations:
7. Define adaptation:
8. Jack rabbits have very long ears that allow blood to flow away from
the body. As blood flows through the ears, heat can escape. Why
might this be considered an adaptation for living in the desert?
Selective Breeding:
9. What is selective breeding?
10. Give two examples of selective breeding.
Genetic Resistance:
11. Insects adapt quickly to pesticides and bacteria adapt quickly to antibiotics. Why are they able
to adapt so much more quickly than larger, more complex organisms?
Species and Speciation:
12. What is the definition of a species?
13. What is speciation and how can it occur?
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Theory of Evolution:
14. A theory is an explanation supported by__________________ from multiple experiments.
15. Evolution likely happens through _____________ _____________, which is the process
where organisms with more favorable traits survive and reproduce at higher rates than those
without the favorable traits.
Natural Selection
16. Who was Charles Darwin and what species did he specifically study?
17. Briefly explain the four steps of natural selection below.
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