History of Life on Earth
Explore the major events and evolutionary milestones in the history of life on Earth, from its origins to the present day.
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History of Life on Earth
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Read each question carefully and answer to the best of your ability. Show all work where applicable.
1. Which era is known as the 'Age of Mammals'?
Paleozoic Era
Mesozoic Era
Cenozoic Era
Precambrian Era
2. The sudden diversification of life forms that occurred approximately 541 million years ago is known as the:
Great Oxygenation Event
Cambrian Explosion
Permian Extinction
Cretaceous-Paleogene Extinction
3. The first multicellular organisms appeared during the Eon.
4. The theory that explains the movement of Earth's continents over geological time is called .
5. Describe the significance of the development of photosynthesis in the early history of Earth's atmosphere and life.
6. Dinosaurs were the dominant terrestrial vertebrates during the Cenozoic Era.
True
False
Match the geological event with its description.
7. Permian-Triassic Extinction
a. Formation of the first eukaryotic cells
8. Endosymbiotic Theory
b. 'The Great Dying', largest mass extinction event
9. KT Extinction Event
c. Extinction of non-avian dinosaurs