Exam (elaborations)
SDSU OCEAN 100 FINAL SACRAMENTOGRILO QUESTIONS AND ANSWERS 2025
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SDSU OCEAN 100 FINAL SACRAMENTOGRILO QUESTIONS AND ANSWERS 2025
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SDSU OCEAN 100 FINAL 2024SACRAMENTOGRILO
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
coral - ANSWERS-small carnivorous animals that live in large colonies that has
tentacles with stinging cells and calcite skeletons
QUESTION 2
coral reef - ANSWERS-very diverse and productive regions (lots of primary
producers)
QUESTION 3
reef conditions - ANSWERS-1. shallow, warm, clear, seawater (for sunlight)
2. strong sunlight (equatorial regions)
3. hard substrate (foundation) = volcano
4. strong currents
they build upwards
END OF
PAGE 1
, SDSU OCEAN 100 FINAL 2024
SACRAMENTOGRILO
QUESTION 4
why are most coral reefs found on active volcanoes (divergent boundaries)? -
ANSWERS-need sturdy foundation
QUESTION 5
symbiotic relationship b/w corals and zooxanthellae dinoflagellates - ANSWERS-•
corals give CO2 & shelter
• algae gives color, O2, glucose (food)
QUESTION 6
where are coral reefs found? - ANSWERS-equatorial regions on western part of
continents (western boundary currents make water warmer & upwelling)
END OF
PAGE 2
, SDSU OCEAN 100 FINAL 2024
SACRAMENTOGRILO
QUESTION 7
3 types of coral reefs - ANSWERS-1. fringing
2. barrier
3. atoll
QUESTION 8
stages of coral reefs - ANSWERS-fringing → barrier → atoll (plate motion)
QUESTION 9
coral bleaching - ANSWERS-algae leaves coral (temp change or they die) no
longer providing coral with color
QUESTION 10
Corals medical benefits - ANSWERS-it has pain killing properties, is anti-cancer,
anti-viral, anti-bacterial and helps with arthritis
END OF
PAGE 3
, SDSU OCEAN 100 FINAL 2024
SACRAMENTOGRILO
QUESTION 11
hydrothermal vents - ANSWERS-at divergent boundaries (plates moving apart)
deep in the ocean on the floor
QUESTION 12
what organism is base of the food chain at hydrothermal vents? - ANSWERS-
arachaea (ancient prokaryotes)
QUESTION 13
what is the source of energy at hydrothermal vents? - ANSWERS-magma
chambers; minerals/chemicals shooting out of vents
QUESTION 14
organisms found at hydrothermal vents - ANSWERS-sea dandelion, pompeii
worm, yeti crab (keratin looks like fur)
END OF
PAGE 4
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