Question:

Dinosaurs were present during

Updated On: Jul 28, 2022
  • paleozoic era
  • mesozoic era
  • coenozoic era
  • proterozoic era
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The Correct Option is B

Solution and Explanation

Mesozoic era is the geological era that extended from the end of the Palaeozoic era, about $248$ million years ago, to the beginning of the Cenozoic era, about $65$ million years ago. It comprises the Triassic, Jurassic, and Cretaceous periods. The Mesozoic era is often known as the "Age of reptiles" as these animals, which included the dinosaurs, pterosaurs, and ichthyosaurs, became the dominant life form; most became extinct before the end of the era.
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Concepts Used:

Evolution

Evolution is a process that occurs in changes in the genetic content of a population over time. Evolutionary change is generally classified into two: microevolution and macroevolution. The process of changes in allele frequencies in a population over time is a microevolutionary process. Three main mechanisms that cause allele frequency change are natural selection, genetic drift, and gene flow. On the other hand, macroevolution refers to change at or above the level of the species.