General Biology II Quiz

Which era covers approximately 88% of the Earth's history?

• Cenozoic Era

• Mesozoic Era

• Paleozoic Era

• Precambrian Era

What recent discovery challenges the belief about Precambrian life?

• Fossils of Coronacollina acula

• Discovery of dinosaurs

• Rise in sea levels

• Formation of Pangaea

Until recent discoveries, animals existing before the Cambrian period were believed to be?

• small and ocean dwelling

• small and nonmotile

• small and soft- bodied

• small and radially symmetrical

What were likely the causes of the mass extinction at the end of the Paleozoic Era?

I. Tectonic movement cause earthquake

II. Collision of an asteriod or comets

III. Increase in volcanic activity

IV. Ice Age extinction event

V. Rise in sea levels

• I and III         

• I, II & III

• I, III, and V

• I, II, III, IV, and V

What major geological event marked the beginning of the Mesozoic Era?

• Break-up of Pangaea

• Formation of Rodinia

• Glaciations

• Rise in sea levels

What era is characterized by the dominance of reptiles like dinosaurs?

• Cenozoic Era

• Mesozoic Era

• Paleozoic Era

• Precambrian Era

When did the Cenozoic Era begin?

• 245 million years ago

• 540 million years ago

• 65 million years ago

• 180 million years ago

What caused the cooling down of the climate during the Cenozoic Era?

• Rise in sea levels

• Increase in atmospheric oxygen

• Formation of mountain ranges

• Glaciations

What does the Cenozoic Era known for?

• Age of Birds

• Age of Dinosaurs

• Age of Mammals

• Age of Reptiles

What major event occurred between 10,000 and 8,000 years ago during the Cenozoic Era?

• Rise of flowering plants

• Mass extinction of mammals

• Formation of mountain ranges

• Increase in volcanic activity