Dinosaurs and Their Era

Dinosaurs were unique reptiles that ruled the Earth during the Mesozoic Era, which is divided into the Triassic, Jurassic, and Cretaceous periods. They evolved from small, nimble creatures to diverse species, including the iconic Tyrannosaurus Rex. The Cretaceous period marked their peak, but a massive asteroid impact led to their extinction. However, birds, their direct descendants, survived and continue to thrive today, showcasing the resilience of life.

What distinguishes dinosaurs from other reptiles?

• They walked upright on two or four legs.

• They had scales and laid eggs.

• They lived in water.

• They were cold-blooded.

During which period did the first dinosaurs appear?

• Triassic

• Paleozoic

• Cretaceous

• Jurassic

What was a characteristic of the earliest known dinosaurs like Eoraptor?

• They lived in water.

• They had wings and could fly.

• They were small and nimble.

• They were large and slow.

What was the climate like during the Jurassic period?

• Cold and dry

• Hot and arid

• Warm and wet

• Cold and wet

Which group of dinosaurs evolved into the first birds?

• Sauropods

• Theropods

• Ankylosaurs

• Stegosaurs

What marked the peak of dinosaur evolution during the Cretaceous period?

• The greatest diversity of dinosaur species

• The extinction of dinosaurs

• The development of large predators

• The rise of mammals

What new food source emerged during the Cretaceous period?

• Ferns

• Mosses

• Coniferous plants

• Flowering plants

What event led to the extinction of the dinosaurs?

• A severe drought

• A massive volcanic eruption

• An asteroid impact

• A global ice age

What percentage of species went extinct due to the asteroid impact?

• 90%

• 50%

• 76%

• 100%

What is the legacy of dinosaurs that continues to exist today?

• Reptiles

• Mammals

• Amphibians

• Birds