AP BIOLOGY

EVOLUTION

THE ORIGIN OF LIFE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Dinosaurs are the primary species in this era.
A
precambrian
B
paleozoic
C
mesozoic
D
cenozoic
Explanation: 

Detailed explanation-1: -Mesozoic (252-66 million years ago) means ‘middle life’ and this is the time of the dinosaurs. This era includes the Triassic, Jurassic, and Cretaceous Periods, names that may be familiar to you.

Detailed explanation-2: -Mesozoic era: The Mesozoic Era is known as the “Middle Life” era. It’s also known as the Dinosaur Age. It lasted from 245 to 65 million years ago and was separated into three periods: the Triassic, Jurassic, and Cretaceous periods.

Detailed explanation-3: -During the Mesozoic, or “Middle Life” era, life diversified rapidly and giant reptiles, dinosaurs and other monstrous beasts roamed the Earth. The period, which spans from about 252 million years ago to about 66 million years ago, was also known as the age of reptiles or the age of dinosaurs.

Detailed explanation-4: -The Mesozoic Era (251.9 to 66.0 million years ago) was the “Age of Reptiles.” During the Mesozoic, Pangaea began separating into the modern continents, and the modern Rocky Mountains rose. Dinosaurs, crocodiles, and pterosaurs ruled the land and air.

Detailed explanation-5: -The Mesozoic Era is literally the era of “middle life.” It is also known as the age of dinosaurs. It lasted from 245 to 65 million years ago and is divided into the three periods described inFigure below. The Mesozoic began with the supercontinent Pangaea.

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