Question

Mesozoic era was dominated by
a. Gymnosperms
b. Mammals
c. Dinosaurs
d. Fishes

Answer 1

Hint: Mesozoic is the geological time which is almost about 252 to 60 million years ago, and it is one of the eras of Phanerozoic Eon, where is preceded by the Paleozoic and it is succeeded by the Cenozoic era.

Complete answer:
- Mesozoic era is also called the Age of reptiles or the age of confers.
- This Mesozoic era is again subdivided into the following types, such as Triassic, Jurassic, and Cretaceous.
- These subdivisions are also further subdivided into epochs and stages.
- Mesozoic era is the time, where there are significant tectonic climates and evolutionary changes.
- The ancestors of the plants and animals, which exist today are mainly derived in the Mesozoic era, however, the Mesozoic era is very significant for the time of Dinosaurs.
- When it comes to the temperature of the climate, wherein the earth is warm, there is not that much difference in the temperature of equatorial and polar regions.
- Mesozoic era is mostly for the Transition of geologic and biological things.
- In the Mesozoic era, where three of five large mass extinction is seen, where one is seen at the boundary of Paleozoic and Mesozoic, and another extinction is seen within the Mesozoic, in the end of the Triassic period, where another one is seen in between Cenozoic and Mesozoic, so the demise of Dinosaurs is seen.

Hence, the correct answer is option (C).

Note: The fauna and the flora of the Mesozoic era are completely different from the Paleozoic era, whereas 90% of all marine invertebrate species and 70 % of all terrestrial animals are extinct in the time of Mesozoic era.