describing part 2

Question 1

buffons law

Answer 1

different regions that have similar environments will have different plants and animals
- critical to biogeography and the historical view of organisms

Question 2

buffons evolution

Answer 2

rejected descent from common ancestor but thought limited adaptive change is possible
- thought there should be intermediate forms of phenotypes

Question 3

arrow of time

Answer 3

introduced history to the study of life
- epochs of nature proposed 7 periods in the history of life, comet hit sun, debri cooled to form planets, oceans formed and marine life, water retreated, animal life generated on land, continents fragmented, humans appeared

Question 4

earths temperature

Answer 4

since earth has been cooling, the temperature is an indicator of its age
- 75,000 years
thought animals could adapt to cooler temps

Question 5

buffons weakening of essentialism

Answer 5

archetypes were not imperfections but instead were adaptations
- biological species concept was important

Question 6

carl linnaeus

Answer 6

manager of scientific information and student of relationships among organisms

Question 7

Linnaeus contributions

Answer 7

first to use binomial nomenclature
- seperated naming of organisms from description of organisms
- formed nested heirarchial classification
used sexual features

Question 8

linnaeus implications for evolutionary thought

Answer 8

suggested relationships

ex. oak trees are more similar because they have a more common ancestor than with chestnuts
cons: idea of species that hybridization could not bridge

Question 9

biological keys

Answer 9

invented by lamarck in 1778

- used to identify specimens of known plants by a series of two fold decisions