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