44. Dinosaur fossils are mostly likely to be found in metamorphic forms of rock
ID: 121180 • Letter: 4
Question
44. Dinosaur fossils are mostly likely to be found in metamorphic forms of rock 45. Which of the following appeared first? a. dinosaurs b. flowers c. mammals d. insects 46. Pterosaurs were the first invertebrates to fly. 47 Several types of pterosaurs were viewed during the class presentation. What trat or traits did they seem to have in common? a some did not have beak-like structures b. a variety of beak shapes and head sizes c all were the same color d. all had feathers 48 What is the most likely reason that dinosaurs became extinct? a. radiation from a supernova explosion b. a dust cloud produced by an asteroid striking New Mexico c, a decline in species diversity and an increase in mammals d. none of the above because extinction is far more complex 49. spinosaurus is considered to have been the largest of the carnivorous dinosaurs 50. Dinosaurs are considered to be members of the Archosauria family W Document!- WordExplanation / Answer
44. No fossil can be found in metamorphic rock because for metamorphism we need high temperature and pressure which destroys the fossil hence it is a false statement.
45. Insects out of the all appeared first, hence "D" is correct.
46. Pterosaurs are the earliest vertebrates known to have evolved powered flight. Hence the statement in the question is false.
47. Pterosaurs have a variety of beak shape and head sizes. Hence option "B" is correct.
48. The most likely reason for dinosaurs to become extinct because of the production of a dust cloud produced by an asteroid striking New Mexico. Hence option "B" is correct.
49. Spinosaurus was among the largest of all known carnivorous dinosaurs, nearly as large or even larger than Tyrannosaurus, Giganotosaurus and Carcharodontosaurus. Hence it is a true statement.
50. Dinosaurs belong to a group known as archosaurs, which also includes modern crocodilians. Hence the statement is true
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