Question:
In which era reptiles were dominated?
In which era reptiles were dominated?
Updated On: Aug 16, 2024
- Coenozoic era
- Meszoic era
- Palaeozoic era
- Archaeozoic era
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The Correct Option is B
Solution and Explanation
Mesozoic era began about $24.8$ crore years ago and lasted for about $18.3$ crore years. It is also known as the "Age of Reptiles".
The main events of Mesozoic era are :
Mesozoic
(i) Gymnosperms dominate landscape; first dinosaurs and mammals.
(ii) Gymnosperms continue as dominant plants; dinosaurs dominant; first birds.
(iii) Flowering plants (angiosperms) appear, dinosaurs and many groups of organisms become extinct at end of period.
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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.