Journey Through the History of Life on Earth

Which of the following is NOT one of the four main geologic eras?

• Neolithic

• Mesozoic

• Paleozoic

• Precambrian

During the Precambrian Eon, what significant development occurred in the oceans?

• Emergence of the first prokaryotic cells

• Formation of hard-shelled animals

• Rise of large mammals

• Appearance of flowering plants

What event marks the beginning of the Paleozoic Era?

• The formation of the first eukaryotic cells

• The Cambrian explosion

• The extinction of dinosaurs

• The rise of mammals

Which period in the Paleozoic Era saw the first animals move onto land?

• Carboniferous

• Ordovician

• Devonian

• Cambrian

What was the dominant group of animals during the Mesozoic Era?

• Amphibians

• Dinosaurs

• Birds

• Mammals

Which of the following events led to the end of the Mesozoic Era?

• The rise of flowering plants

• A rogue asteroid impact

• A massive volcanic eruption

• A global ice age

In the Cenozoic Era, which group of animals became dominant?

• Mammals

• Dinosaurs

• Reptiles

• Amphibians

Which period in the Cenozoic Era saw the emergence of the first primates?

• Quaternary

• Jurassic

• Neogene

• Paleogene

What major climatic event characterized the Quaternary period?

• Frequent volcanic eruptions

• Fluctuations between ice ages and interglacial periods

• A prolonged drought

• A global warming event

Which group of primates evolved into the first hominid species?

• Apes

• Monkeys

• Tarsiers

• Lemurs