BIO 150 Exam 2 – Keck Question and
answers 100% correct (8 pgs)
Macroevolution - correct answer ✔Evolutionary change above the species
level
(evolutionary trends)
Biogeography areas if natural science - correct answer ✔-geology
-palentology
-phylogenetics
-ecology
Vicarience - correct answer ✔speciation due to isolation by geographic
separation
biotic factors - correct answer ✔-exploiting novel environment
-dispersal
-competition
abiotic factors - correct answer ✔-climate/climate change
-eustatic events (sea level changes)
-tectonic events (continental shifting)
2 main fields of biogeography - correct answer ✔ecological and historical
ecological biogeography - correct answer ✔how ecological processes that
occur in short periods of time act on distributional patterns of organisms
, historical biogeography - correct answer ✔how processes that occur over
long periods of time influence patterns of geographic distribution.
dispersal - correct answer ✔the movement of organisms from one place to
another
Ordovician event - correct answer ✔-effect on marine life
-extensive glaciation
-fall of sea level
-change in dominance after
-oldest
Devonian event - correct answer ✔-less certain of cause
-sea level change
-lack of oxygen
-eutrophication
-2nd oldest
Permian Event - correct answer ✔-had large insects
-LARGEST EXTINCTION EVENT
-volcanic
-meteorite
-anoxic (water depleted on oxygen)
-3rd
Triassic event - correct answer ✔-mostly on terrestrials
answers 100% correct (8 pgs)
Macroevolution - correct answer ✔Evolutionary change above the species
level
(evolutionary trends)
Biogeography areas if natural science - correct answer ✔-geology
-palentology
-phylogenetics
-ecology
Vicarience - correct answer ✔speciation due to isolation by geographic
separation
biotic factors - correct answer ✔-exploiting novel environment
-dispersal
-competition
abiotic factors - correct answer ✔-climate/climate change
-eustatic events (sea level changes)
-tectonic events (continental shifting)
2 main fields of biogeography - correct answer ✔ecological and historical
ecological biogeography - correct answer ✔how ecological processes that
occur in short periods of time act on distributional patterns of organisms
, historical biogeography - correct answer ✔how processes that occur over
long periods of time influence patterns of geographic distribution.
dispersal - correct answer ✔the movement of organisms from one place to
another
Ordovician event - correct answer ✔-effect on marine life
-extensive glaciation
-fall of sea level
-change in dominance after
-oldest
Devonian event - correct answer ✔-less certain of cause
-sea level change
-lack of oxygen
-eutrophication
-2nd oldest
Permian Event - correct answer ✔-had large insects
-LARGEST EXTINCTION EVENT
-volcanic
-meteorite
-anoxic (water depleted on oxygen)
-3rd
Triassic event - correct answer ✔-mostly on terrestrials
