Bio 370 Exam 2 QUESTIONS N
ANSWERS RATED A+
How would an endotherm react to a rise in temp? - correct answer ✔✔ Body temp remains
constant
major challenge for gas exchange for terrestrial vertebrate - correct answer ✔✔ significant
water loss
Gases need to be dissolved at the respiratory surface in order to diffuse into body fluids
which is More developed in aquatic animals than terrestrial animals? - correct answer ✔✔
lateral line system for electroreception
the world today - correct answer ✔✔ continent separation
land in temperate regions (northern hemi)
temp cold and dry
Cold climate with permanent ice
Permian Period - correct answer ✔✔ woody plants co2 resistant, swampy coal beds, higher O2
decrease CO2, giant flying arthropods, tetrapods, increase herbivory
Paleozoic Pangaea - correct answer ✔✔ 335-160 mil yrs ago
large areas close to equator
plants and animals
Silurian Period - correct answer ✔✔ simple terrestrial ecosystem
,small plants: moss and fungi
First terrestrial Arthropods 435mya
scorpion, millipede
vascular plants in devonian - correct answer ✔✔ roots: gather water and nutrients
leaves: photosynthesis
vascular sys:fluid transport
cuticle:prevent drying
Support: lingin and cellulose
Devonian (410mya) - correct answer ✔✔ No terrestrial vertebrates!
no flying insects or plant eaters
Mostly Detritivores and Carnivores
ex: millipedes, springtails, scorpion, spiders
Early Carboniferous (mississipian, pennsyvanian) - correct answer ✔✔ First Terrestrial
Vertebrates!
Giant horsetails and ferns, vines no flowering plants or grasses
first flying insects!
global environmental factors that affect evolution - correct answer ✔✔ Temp
CO2
O2
Why does temp vary? - correct answer ✔✔ Milankovich cycles
solar radiation
, greenhouse gases
location of continents
CO2
5 major extinctions - correct answer ✔✔ Ordovician, Devonian, Permian, (paleozoic extinctions)
then Triassic, Cretaceous
Ordovician-Silurian Extinction - correct answer ✔✔ Caused by a drop in sea levels as glaciers
formed
movemnet of Gondwana to south pole
drop in CO2
60% of marine invertebrates died
Devonian Extinction - correct answer ✔✔ likely because: ocean volcanism
ocean anoxia, frop in sea levels
evolution of large vascular land plants
Permian-Triassic Extinction - correct answer ✔✔ largest in history,
95% of marine, 70%of terrestrial, 49% tetrapods, 57% marine invertebrates
Cause of Permian Extinction - correct answer ✔✔ multiple stressors:
Siberian traps, release of methane, pangea formation, ocean anoxia, hydrogen sulfide release,
sea level fluctuations, Meteor?
Transition to land obstacles - correct answer ✔✔ - No buoyancy
- Scarce water
- Extreme temperatures
ANSWERS RATED A+
How would an endotherm react to a rise in temp? - correct answer ✔✔ Body temp remains
constant
major challenge for gas exchange for terrestrial vertebrate - correct answer ✔✔ significant
water loss
Gases need to be dissolved at the respiratory surface in order to diffuse into body fluids
which is More developed in aquatic animals than terrestrial animals? - correct answer ✔✔
lateral line system for electroreception
the world today - correct answer ✔✔ continent separation
land in temperate regions (northern hemi)
temp cold and dry
Cold climate with permanent ice
Permian Period - correct answer ✔✔ woody plants co2 resistant, swampy coal beds, higher O2
decrease CO2, giant flying arthropods, tetrapods, increase herbivory
Paleozoic Pangaea - correct answer ✔✔ 335-160 mil yrs ago
large areas close to equator
plants and animals
Silurian Period - correct answer ✔✔ simple terrestrial ecosystem
,small plants: moss and fungi
First terrestrial Arthropods 435mya
scorpion, millipede
vascular plants in devonian - correct answer ✔✔ roots: gather water and nutrients
leaves: photosynthesis
vascular sys:fluid transport
cuticle:prevent drying
Support: lingin and cellulose
Devonian (410mya) - correct answer ✔✔ No terrestrial vertebrates!
no flying insects or plant eaters
Mostly Detritivores and Carnivores
ex: millipedes, springtails, scorpion, spiders
Early Carboniferous (mississipian, pennsyvanian) - correct answer ✔✔ First Terrestrial
Vertebrates!
Giant horsetails and ferns, vines no flowering plants or grasses
first flying insects!
global environmental factors that affect evolution - correct answer ✔✔ Temp
CO2
O2
Why does temp vary? - correct answer ✔✔ Milankovich cycles
solar radiation
, greenhouse gases
location of continents
CO2
5 major extinctions - correct answer ✔✔ Ordovician, Devonian, Permian, (paleozoic extinctions)
then Triassic, Cretaceous
Ordovician-Silurian Extinction - correct answer ✔✔ Caused by a drop in sea levels as glaciers
formed
movemnet of Gondwana to south pole
drop in CO2
60% of marine invertebrates died
Devonian Extinction - correct answer ✔✔ likely because: ocean volcanism
ocean anoxia, frop in sea levels
evolution of large vascular land plants
Permian-Triassic Extinction - correct answer ✔✔ largest in history,
95% of marine, 70%of terrestrial, 49% tetrapods, 57% marine invertebrates
Cause of Permian Extinction - correct answer ✔✔ multiple stressors:
Siberian traps, release of methane, pangea formation, ocean anoxia, hydrogen sulfide release,
sea level fluctuations, Meteor?
Transition to land obstacles - correct answer ✔✔ - No buoyancy
- Scarce water
- Extreme temperatures
