Time Periods Quiz

What does the term 'Cambrian explosion' refer to?

• The dominance of reptiles

• The diversity of life forms that appeared in a short period

• The extinction of dinosaurs

• The first mammals on Earth

How many mass extinctions have occurred throughout history?

• Three

• Five

• Seven

• Ten

What percentage of life on Earth was lost during the mass extinction 250 million years ago?

• 100%

• 90%

• 70%

• 50%

Which period is known for the extinction of dinosaurs?

• Cretaceous

• Permian

• Triassic

• Jurassic

What type of plants dominated during the Triassic period?

• Ferns

• Gymnosperms

• Mosses

• Flowering plants

Which group of animals first evolved during the Devonian period?

• Insects

• Reptiles

• Mammals

• Birds

What significant event is associated with the Quaternary period?

• First flowering plants

• Extinction of large mammals

• First amphibians

• First vertebrates appeared

Which organisms were dominant during the Ordovician period?

• Gymnosperms

• Mammals

• Dinosaurs

• Algae

What is the current period referred to as due to human impact?

• Eighth extinction

• Sixth extinction

• Fifth extinction

• Seventh extinction

Which period saw the first appearance of plants and animals on land?

• Silurian

• Devonian

• Carboniferous

• Permian