Are lions and tigers evolved from a common ancestor cat like an example of micro evolution?

No, lions and tigers are not an example of microevolution. Microevolution refers to small-scale evolutionary changes that occur within a population over a relatively short period of time, such as changes in gene frequencies or the emergence of new traits. The evolution of lions and tigers from a common ancestor is an example of macroevolution, which refers to large-scale evolutionary changes that occur over long periods of time, such as the formation of new species or the extinction of others.