Dinosaurs: Size, Features, and Extinction

The video explores the evolution of dinosaur sizes from the Triassic to the Jurassic period. Early dinosaurs like Eoraptor and Coelophysis were small, but volcanic eruptions led to larger species in the Jurassic. Prosauropods evolved into massive sauropods due to specialized anatomy like air sacs and hollow bones. Sauropods, such as Brontosaurus and Diplodocus, used their size for defense and efficient feeding. Titanosaurs, the largest dinosaurs, eventually faced extinction due to an asteroid impact.

Which early dinosaur was only as tall as a human knee?

• Stegosaurus

• Brachiosaurus

• Eoraptor

• Tyrannosaurus

What event led to the rise of larger dinosaurs in the Jurassic period?

• Ice age

• Volcanic eruptions

• Flooding

• Asteroid impact

Which dinosaur was known for its plate-covered body?

• Diplodocus

• Velociraptor

• Triceratops

• Scelidosaurus

What anatomical feature allowed Prosauropods to evolve into massive sizes?

• Sharp teeth

• Thick skin

• Strong legs

• Specialized lungs and air sacs

Which group of dinosaurs lacked air sacs, limiting their size?

• Theropods

• Titanosaurs

• Sauropods

• Ornithischians

How did sauropods' size benefit them?

• Faster movement

• Better camouflage

• Defense against predators

• Ability to fly

What was the primary diet of Brontosaurus?

• Meat

• Fish

• Insects

• Leaves, stems, and twigs

Which dinosaur group included the largest land animals ever?

• Theropods

• Ornithischians

• Pterosaurs

• Titanosaurs

What ultimately led to the extinction of the Titanosaurs?

• Climate change

• Asteroid strike

• Predator attacks

• Volcanic eruptions

Which of the following was NOT a Titanosaur?

• Dreadnoughtus

• Patagotitan

• Argentinosaurus

• Stegosaurus