Sauropods: Giants on Earth

According to the passage, what group of dinosaurs were the giants that many people imagine when thinking of dinosaurs?

• Theropods

• Sauropods

• Ceratopsians

• Ornithopods

Fill in the blank: Sauropods generally had large bodies and long _______.

• necks

• tails

• wings

• claws

Which of the following statements is true according to the passage?

• Sauropods walked on two legs

• Sauropods had small heads

• Sauropods were the smallest dinosaurs

• Sauropods had short necks

According to the passage, the Argentinosaurus was almost ten times bigger than the largest land mammals today.

• True

• False

What is the length range for large sauropods like Apatosaurus and Brachiosaurus, according to the passage?

• 10 to 20 feet

• 25 to 40 feet

• 65 to 100 feet

• 150 to 200 feet

Fill in the blank: Even the smaller sauropods could reach a length of ______ feet.

• 50

• 20

• 100

• 75

According to the passage, how much did a sauropod usually weigh when it hatched from an egg?

• Less than 11 pounds

• About 100 pounds

• Over 500 pounds

• Nearly 1,000 pounds

Why did sauropods grow to be so large?

• Because they lived longer than other dinosaurs

• Because larger baby sauropods were more likely to survive predators

• Because they ate more food than other dinosaurs

• Because their bones were stronger than other dinosaurs

Sauropods grew extremely quickly over the course of about thirty years.

• True

• False

What is one reason scientists think sauropods could not have evolved to be even larger?

• There wouldn't have been enough food to feed such huge creatures, or their bones might not have been able to support their weight.

• They would have needed to live underwater to survive.

• Their skin would have become too thick to allow movement.

• They would have lost the ability to reproduce.