1)Angiosperm plants DO NOT have a demonstrated coevolutionary interaction, diffuse or strong, with which group?
Select one:
a. Social hymenopterans
b. Lepidopterans
c. Non-hominoid primates
d. Herbivorous Permian synapsids
2)If strictly herbivorous animals feeding on C3 plants are switched entirely to C4 plants, what would we see in their tissues?
Select one:
a. Enrichment of 13C
b. Depletion of 13C
3)When plant matter is buried, which carbon isotope will be buried in a greater proportion than it exists in the atmosphere because it was fractionated by photosynthesis?
Select one:
a. 14C (unstable)
b. 12C
c. 13C
4)Light isotopes of which element(s) leave animal's bodies in a metabolic waste product, leading to enrichment at each consumer level?
Select one:
a. C
b. N
c. O
d. C and N
e. C, N and O
5)The advent of photosynthesis and oxygen production by living organisms was followed most closely by which atmospheric event?
Select one:
a. Catastrophic Ordovician Glaciation
b. The Boring Billion
c. The Great Oxygenation Event
d. Record oxygen levels and insect body sizes
6)Climates and Life: If life responds to climate change after 2100 as it did during the PETM, which of these effects would NOT have a precedent in the Paleocene-Eocene fossil record?
Select one:
a. Range shifts from flora and fauna
b. Extinction of benthic organisms, including single-celled forams
c. The collapse of reef communities
d. Extinctions and range contractions of primates
7)Which of these interpretations would LEAST biased by the Signor-Lipps (extinction) or Sppil-Rongis (origination) effects?
Select one:
a. The date when a species went extinct
b. Whether multiple taxa went extinct at the same time
c. Detecting extinction in the modern day
d. Whether a species originated before an extinction event or after
e. None of these are related to the Signor-Lipps or Sppil-Rongis effects
8)Background extinction is best expressed as
Select one:
a. A single rate for each genus or family
b. A single rate per taxon, per year
9)Which organisms are the MOST important for sequestering carbon in marine ecosystems, given their tissue composition and interaction with the carbonate-silicate cycle?
Select one:
a. Calcifying phytoplankton that form limestones
b. Marine algal photosynthesizers like seaweed
c. Benthic organisms without mineral tissues
d. Silica-skeletoned phytoplankton like diatoms
c. An average rate per taxon with a confidence interval
d. A single rate for every thousand years
10)Which date is closest to the time in which carbon first begin being sequestered in terrestrial sediments through the burial of terrestrial plants?
Select one:
a. 470 million years ago (Ordovician)
b. 250 million years ago (Carboniferous)
c. 427 million years ago (Devonian)
d. 330 Million years ago (Carboniferous)
11)When plant matter is buried, which carbon isotope will be buried in a greater proportion than it exists in the atmosphere because it was fractionated by photosynthesis?
Select one:
a. 14C (unstable)
b. 12C
c. 13C
thank you, sorry for the confusion
1) option D
Hymenoptera, lepidoptera etc are insect pollinators of angiosperms. Non hominoid primates have been relying on angiosperms for various needs and reasons
On the other hand , herbivorous synapsids originated 312 million years ago where as angiosperms originated 180 million years ago. Synapsids have become extinct by Triassic era .there fore the synapsids and angiosperms have no co evolutionary history
1)Angiosperm plants DO NOT have a demonstrated coevolutionary interaction, diffuse or strong, with which group? Select...
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