Lecture 15: Evolution of Species

Question 1

Speciation due to a geographical barrier is referred to as ____ speciation.

Answer 1

Allopatric

Question 2

Mechanical or behavioral differences result in ____ barriers to species.

Answer 2

Pre-zygotic

Question 3

Hybrid sterility (like a mule) results in different species due to ____ barriers.

Answer 3

Post-zygotic

Question 4

Speciation that occurs without a physical barrier, resulting from genetic differences, is called ____ speciation.

Answer 4

Sympatric

Question 5

The formation of the Earth occurred in the ____.

Answer 5

Precambrian

Question 6

The “age of the dinosaurs” was the ____.

Answer 6

Mesozoic

Question 7

The era that we currently live in is the ____.

Answer 7

Cenozioc

Question 8

The era dominated by bacteria is the ____.

Answer 8

Precambrian

Question 9

The era where life exploded in diversity is the ____.

Answer 9

Paleozoic

Question 10

The era dominated by gymnosperms (pine trees) is the ____.

Answer 10

Mesozoic

Question 11

The era where life migrated onto land was the ____.

Answer 11

Paleozoic

Question 12

What caused the extinction at the end of the Permian?

Answer 12

Massive volcanic activity

Question 13

What caused the extinction at the end of the Cretaceous?

Answer 13

An asteroid impact

Question 14

The rise of oxygen occurred in the ____.

Answer 14

Precambrian

Question 15

The “age of the mammals” is the ____.

Answer 15

Cenozoic