Geology 105 Exam 2 CofC QUESTIONS
AND ANSWERS
1. Acanthostega - ANSWER-- first amphibian, 360 mya
- "fish with hands"
- first entire tetrapod with loose digits (8 on every hand)
- retained fish traits (gills and tail fin)
2. amphibians - ANSWER-first vertebrae's on land, 375 mya- late Devonian
3. Anomalcaris - ANSWER-- Burgess Shale unkowns
- radial jaw
- compound eyes
- top predator
4. archaea - ANSWER-- LUCA (remaining frequent commonplace ancestor)
- deep sea vents
- anoxic conditions
- warm springs
- grows at 80-100 ranges C
- produces methane gas (CH4)
- three.Eight mya
5. Are the Ediacaran and Mistaken Point fauna considered to be ancestors to residing
animals? - ANSWER-We think they have been animals because they have been
observed in deep/shallow waters and we realize flora need daylight
6. Arthracosaurs - ANSWER-- reptile like amphibians
- ancestors to trendy reptiles
- extensive
- goes extinct inside the Permian
- offers upward thrust to reptiles
- size 20 cm-2 m
- semi aquatic
7. banded iron formations - ANSWER-- three.5-1.8 bya
- stromatolites produce O2 gasoline in the ocean
- plentiful iron captures any unfastened oxygen
- iron captures any loose oxygen
- iron binds with oxygen
-oxidized iron deposited
8. Burgess Shale - ANSWER-- descent with modification
- all fundamental body parts existed
- every animal for ultimate 500 million years comes from changes in these body
plans
- complicated network
, 9. Cambrian explosion feasible causes - ANSWER-1. Multiplied geologic interest-
greater volcanic eruptions, increases CO2 in surroundings, warmer temp, sea
level upward thrust
2. Increased food supply- will increase in ocean productivity
3. Oxygen stage will increase- photosynthesis
4. How genes (homeobox genes)- small gene changes, massive structural change
five. Evolution of the eyes- crucial for predators
6. Complex community improvement- predator/prey interactions
10.Chordates - ANSWER-Has a
- notochord (rod-like structure)
- gills (fuel exchange) inner
- single dorsal nerve twine (on pinnacle) mind
- tail
11.continental purple beds - ANSWER-- 2.3 bya
- iron deposited in BIF (no greater BIF)
- O2 builds up the ocean
- O2 leaks from ocean to ecosystem
- earth turns pink
12.Describe the Early Earth, and its atmosphere, the floor conditions of the early planet, and
the temperatures - ANSWER-Uninhabitable and very warm
13.Describe the overall Carboniferous wooded area ecology. - ANSWER-Its vast swamp
location -plant material
14.Describe the cranium of Carboniferous age Amphibians. - ANSWER-They have been
anapsid skulls- Do not have openings behind the eyes
15.Diapsid - ANSWER-- 2 fused arches
- dwelling reptiles
- dinosaurs
-birds
16.Did limbs and air breathing occur earlier than or after tetrapods emerged to stay on
land? - ANSWER-Before land limbs came from lobe fins and air respiratory
advanced from gill arches
17.Dimetrodon - ANSWER-- pleasant known pelycosaurs
- endotherms
- sail
- NOT A DINOSAUR
18.Discuss the blessings of skeletonization - ANSWER-safety from predators, garage of
mineral vitamins, helps growth in length, served as adaptive leap forward
19.Discuss the change needed to the skeleton of Acanthostega to permit an animal to
transport on land. - ANSWER-Connection between the pelvis and hind limbs,
extraordinarily beneficial for terrestrial organisms to walk round on land-terrestrial
locomotion
20.Discuss the evolution of shark teeth. - ANSWER-Teeth are changed periodically.
Teeth advanced from shark pores and skin
AND ANSWERS
1. Acanthostega - ANSWER-- first amphibian, 360 mya
- "fish with hands"
- first entire tetrapod with loose digits (8 on every hand)
- retained fish traits (gills and tail fin)
2. amphibians - ANSWER-first vertebrae's on land, 375 mya- late Devonian
3. Anomalcaris - ANSWER-- Burgess Shale unkowns
- radial jaw
- compound eyes
- top predator
4. archaea - ANSWER-- LUCA (remaining frequent commonplace ancestor)
- deep sea vents
- anoxic conditions
- warm springs
- grows at 80-100 ranges C
- produces methane gas (CH4)
- three.Eight mya
5. Are the Ediacaran and Mistaken Point fauna considered to be ancestors to residing
animals? - ANSWER-We think they have been animals because they have been
observed in deep/shallow waters and we realize flora need daylight
6. Arthracosaurs - ANSWER-- reptile like amphibians
- ancestors to trendy reptiles
- extensive
- goes extinct inside the Permian
- offers upward thrust to reptiles
- size 20 cm-2 m
- semi aquatic
7. banded iron formations - ANSWER-- three.5-1.8 bya
- stromatolites produce O2 gasoline in the ocean
- plentiful iron captures any unfastened oxygen
- iron captures any loose oxygen
- iron binds with oxygen
-oxidized iron deposited
8. Burgess Shale - ANSWER-- descent with modification
- all fundamental body parts existed
- every animal for ultimate 500 million years comes from changes in these body
plans
- complicated network
, 9. Cambrian explosion feasible causes - ANSWER-1. Multiplied geologic interest-
greater volcanic eruptions, increases CO2 in surroundings, warmer temp, sea
level upward thrust
2. Increased food supply- will increase in ocean productivity
3. Oxygen stage will increase- photosynthesis
4. How genes (homeobox genes)- small gene changes, massive structural change
five. Evolution of the eyes- crucial for predators
6. Complex community improvement- predator/prey interactions
10.Chordates - ANSWER-Has a
- notochord (rod-like structure)
- gills (fuel exchange) inner
- single dorsal nerve twine (on pinnacle) mind
- tail
11.continental purple beds - ANSWER-- 2.3 bya
- iron deposited in BIF (no greater BIF)
- O2 builds up the ocean
- O2 leaks from ocean to ecosystem
- earth turns pink
12.Describe the Early Earth, and its atmosphere, the floor conditions of the early planet, and
the temperatures - ANSWER-Uninhabitable and very warm
13.Describe the overall Carboniferous wooded area ecology. - ANSWER-Its vast swamp
location -plant material
14.Describe the cranium of Carboniferous age Amphibians. - ANSWER-They have been
anapsid skulls- Do not have openings behind the eyes
15.Diapsid - ANSWER-- 2 fused arches
- dwelling reptiles
- dinosaurs
-birds
16.Did limbs and air breathing occur earlier than or after tetrapods emerged to stay on
land? - ANSWER-Before land limbs came from lobe fins and air respiratory
advanced from gill arches
17.Dimetrodon - ANSWER-- pleasant known pelycosaurs
- endotherms
- sail
- NOT A DINOSAUR
18.Discuss the blessings of skeletonization - ANSWER-safety from predators, garage of
mineral vitamins, helps growth in length, served as adaptive leap forward
19.Discuss the change needed to the skeleton of Acanthostega to permit an animal to
transport on land. - ANSWER-Connection between the pelvis and hind limbs,
extraordinarily beneficial for terrestrial organisms to walk round on land-terrestrial
locomotion
20.Discuss the evolution of shark teeth. - ANSWER-Teeth are changed periodically.
Teeth advanced from shark pores and skin
