Biogeography

Question 1

What is a biosphere?

Answer 1

Area of earth where living organisms are found

Question 2

What two regions did Pangea split in to?How?

Answer 2

Laurasia
Gondwanaland
Continental drift

Question 3

What are biogeographical regions?

Answer 3

Primarily the continents and islands, each inhabited by distinctive species of animals and plants

Question 4

Which 8 regions are species distributed over?

Answer 4

Nearctic 
Eurasia 
South America 
Africa 
Australasia
Indomalayan 
Oceanic 
Antarctic

Question 5

Who is the founder of biogeography?

Answer 5

Alfred Wallace

Question 6

What is dispersal?

Answer 6

Movement of populations away from point of origin

Question 7

What is evolution?

Answer 7

Change of genetic composition of a population

Question 8

What is extinction?

Answer 8

The disappearance of a species

Question 9

What is extant?

Answer 9

Living

Question 10

What are marsupials?

Answer 10

Animals who begin life in uterus but leave to enter the marsupum while still called embryo

Question 11

What are placental mammals?

Answer 11

Animals with placenta connecting the fetus within the uterus to the mothers circulatory system

Question 12

What is biogeography?

Answer 12

The study of past and present distribution of the worlds many species

Question 13

What is Darwin’s explanation of specie distribution?

Answer 13

1. Come from single organism
2. Dispersed
3. Ancestors become extinct
4. Populations isolated
5. Adapted to conditions and formed new species
6. Adjacent geographical areas had more in common