Dinosaurs: Enantiornis
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Scientists believe Enantiornis resembled what type of living bird?
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Flamingo
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Penguin
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Parrot
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Turkey-vulture
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Before taking this quiz, read about Enantiornis in World Book's Dinosaurs!
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- 2.
Enantiornis had this special kind of bone, which is not found in the early bird Archaeopteryx.
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Ulna
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Pygostyle
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Gastrolith
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Stapes
Correct Answer
A. Pygostyle -
- 3.
Ichthyornis looked much like a gull, with this obvious exception.
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It had scaly skin
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It had claws on its wings
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It lacked flight feathers
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It had teeth
Correct Answer
A. It had teeth -
- 4.
Many birds died during the mass extinction at the end of the Cretaceous Period. Some scientists think this percentage of bird species may have become extinct.
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25 percent
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60 percent
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90 percent
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100 percent
Correct Answer
A. 90 percent -
- 5.
Scientists use this name to refer to the group also known as modern birds.
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Enantiornithines
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Neornithes
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Ratites
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Passeriformes
Correct Answer
A. Neornithes -
- 6.
Scientists are not sure why some modern birds survived the mass extinction at the end of the Cretaceous Period. Proposed explanations include which of the following?
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The remarkable singing ability of modern birds enabled them to lure surviving animals into ambush, helping them to find food
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Modern birds were already kept as pets by cavemen, who continued to provide them with birdseed
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Many modern birds may have lived in freshwater areas, where fewer animals became extinct
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All of the above
Correct Answer
A. Many modern birds may have lived in freshwater areas, where fewer animals became extinct -
- 7.
More than half of living bird species are perching birds, many of which weigh less than which of the following?
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1/1000 ounce (0.03 gram)
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1 ounce (28 grams)
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1 pound (454 grams)
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1,000 pounds (454 kilograms)
Correct Answer
A. 1 ounce (28 grams) -
- 8.
True or false. Birds have spent more time living in the Age of Mammals than they did living in the Age of Dinosaurs.
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True
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False
Correct Answer
A. False -
- 9.
Hesperornis was a flightless diving bird of the Cretaceous Period. It grew to about this size.
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3 feet (0.9 metres)
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6 feet (1.8 metres)
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12 feet (3.7 metres)
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33 feet (10 metres)
Correct Answer
A. 6 feet (1.8 metres) -
- 10.
True or false. Enantiornis was an ancestor of modern birds.
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True
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False
Correct Answer
A. False -
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Current Version
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Mar 16, 2022Quiz Edited by
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Aug 15, 2012Quiz Created by
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