Chapter 19 Sample Quiz Key
1. Which one of the following was NOT part of the primitive atmosphere?
The correct answer is D. Iron

D. According to studies, Iron was not to be found within the atmosphere of the primitive earth.

A. The primitive earths atmosphere was said to be made of Hydrogen plus many other elements and compounds.

B. The primitive earths atmosphere was said to be made of Nitrogen plus many other elements and compounds.

C. The primitive earths atmosphere was said to be made of Carbon Dioxide plus many other elements and compounds.

2. During which Era did Dinosaurs flourish?
The correct answer is A. Mesozoic Era

A. Dinosuars stole the spotlight during the Mesozoic Era. Due to their arrival during this Era, they prevented mammals from taking center stage. During this time dinosuars reached gigantic heights while mammals remained small.

B. The Cenozoic Era was not the time dinosuars ruled the lands. The mass extinction of them paved the way for the mammals to overtake their old habitats. Several species of mammals began inhabiting the air, land and seas.

C.

D.

3. What characteristic signifies a mammal?
The correct answer is C. Middle Ear Bone
4. Which type of cell contains DNA but does not have a definitive nucleus?
The correct answer is A. Prokaryotic
5. The oldest known fossils where found during which Era?
The correct answer is B. Precambrian Era
6. What are boulders that have fossilized bacteria on the surface?
The correct answer is C. Stromatolites