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GLG 115 MSU DAMON BASSETT EXAM 2
QUESTIONS AND ANSWERS
- Ecological Provinces
- THE CORRECT ANSWER is: Coastal communities of the
world arranges into geographically different areas. Regions are real phenomena that result from abrupt changes in climate or geography over short distances. On average, only 20 percent of species are common among neighboring regions.
- Jack Sepkoski
- THE CORRECT ANSWER is: Identified the "Big Five"
mass extinctions.
- Evolutionary Radiation
- THE CORRECT ANSWER is: New families appeared more
often than the old ones became extinct.
- Cambrian Fauna
- THE CORRECT ANSWER is: Trilobites; organisms
responsible for Cambrian increase in diversity
- What is the general pattern of diversity through time?
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- THE CORRECT ANSWER is: Increase in diversity,
equilibrium in the Cambrian and drop in the Permian Extinction, increasing ever since
- What role did Sepkoski fill in our modern understanding of
diversity through time?
- THE CORRECT ANSWER is: The fluctuations of the
diversity of life background extinction, identified three major faunal changes through time
- What are the four mass extinction triggers?
- THE CORRECT ANSWER is: Ocean
circulation/stagnation, Sea Level Changes, Volcanic Eruptions, Extra-Terrestrial Impact
- Myomeres
- THE CORRECT ANSWER is: Chevron shaped muscle
segments along the dorsal.
- Chordate
- THE CORRECT ANSWER is: An animal of a large
phylum, comprising the vertebrates together with the sea squirts and lancelets.
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- Tunicate
- THE CORRECT ANSWER is: Sea squirts, Small boxlike
creatures that live as adults in colonies fixed to the seafloor, Filter food from the water
- Lanceolate
- THE CORRECT ANSWER is: Found in shallow water,
Non-vertebrate chordates
- Ostracoderm
- THE CORRECT ANSWER is: Earliest Fishes with hard
parts, "Plated Skin" Ordovician
- Osteostracans
- THE CORRECT ANSWER is: Cephalaspis, First paired
fins, True dorsal fin, Silurian - Devonian
- Galeaspids
- THE CORRECT ANSWER is: Shuyu, Limited to Asia;
first nostril
- Gnathostomes
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- THE CORRECT ANSWER is: The Jawed Fishes,
Acanthodians, Placoderms, Chondrichthyes, Osteichthyes
- Acanthodians
- THE CORRECT ANSWER is: Rare, lightly built, poorly
preserved Silurian
- Placoderms
- THE CORRECT ANSWER is: Abundant Head Shield Well
Developed Jaws, Dunkleosteus, Materpiscis, Devonian
- Osteichthyes
- THE CORRECT ANSWER is: Modern bony fish, Silurian
- Recent
- Dunkleosteus
- THE CORRECT ANSWER is: Ten times the size of a
human, Very bony, No teeth, but bones that sharpened/polished into fangs to eat all the things
- Materpiscis
- THE CORRECT ANSWER is: Live birth, Internal
Fertilization, Sexual Dimorphic, Male Pelvic Claspers