Ch. 15

Question 1

What happened first, oxygen building up in the atmosphere or the Cambrian explosion?

Answer 1

Oxygen build up

Question 2

What came first, vascular plants or reptiles?

Answer 2

Vascular plants

Question 3

Vast forests covered the earth during what period?

Answer 3

Carboniferous period

Question 4

What is a greater amount of time- eons, epochs, periods?

Know the hierarchy of the geological time scale.

Answer 4

Eons

Question 5

How did mitochondria and chloroplasts originate?

Answer 5

They were consumed by a bigger bacteria and formed a symbiotic relationship- Endosymbiont theory

Question 6

What are the biggest differences between the Mesozoic era and Cenozoic era? What major event separated the two?

Answer 6

Age of the reptiles (dinosaurs)
Age of the mammals
Mass extinction from the meteor

Question 7

What characteristics define primates?

What characteristics are unique to certain primate groups?

Answer 7

Forward facing eyes for depth perception, opposable thumbs, large brains

Question 8

What are the most distantly related primates to humans? The closest? In between?

Answer 8

Prosimians
Apes
Simians

Question 9

What are some reasons for human evolution? Why did humans leave the trees and become bipedal?

Answer 9

Loss of habitat

It allowed tool use and helped with detecting predators