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AICE Marine Science Exam Review questions with correct answers.
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AICE Marine Science Exam Review questions with correct answers.
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AICE Marine Science Exam Review questions withcorrect answers
What is meant by the term succession? Using an artificial reef and a
coastline contaminated by an oil spill; which would illustrate a better
example of primary succession and which for secondary succession?
Why? Correct Answer-The process by which a plant or animal
community successively gives way to another until a stable climax is
reached.
Primary: Artificial reef.
Secondary: Coastline contaminated by an oil spill.
What is meant by the term trophic level and what are the five standard
levels called? In addition which has the highest amount and lowest
amount of available energy? Correct Answer-Trophic level = energy.
5 Standard Levels:
1. Primary Producers, 2. Primary Consumers, 3. Secondary Consumers,
4. Tertiary Consumers, 5. Quaternary Consumers.
Levels of Available Energy:
Highest: Primary Producers, Lowest: Quaternary Consumers.
Contrast the difference between up-welling and down-welling coastal
zones as it applies to productivity. Explain why. Correct Answer-
Upwelling: Higher productivity (Cold water, high in O2, high in
nutrients).
Downwelling: Lower productivity. (Warm water, low in O2, low in
nutrients).
,Suggest two major reasons for why coral reef cover is drastically
declining on a global scale. Correct Answer-#1: Ocean Acidification.
#2: Pollution.
Why do coral reefs need low turbidity conditions as well as a hard
substrate to thrive? Correct Answer-Hard substrates: Act as a stabilizer
(anchor).
Low turbidity: Clarity of water, allows for more photosynthesis (allows
more sunlight to penetrate surface).
Provide an explanation as to why 90% of the productivity of the primary
producers is not carried over to the productivity of the primary
consumers. Correct Answer-Energy decreases as it moves up trophic
levels because energy is lost as metabolic heat when the organisms from
one trophic level are consumed by organisms from the next level.
Suggest two reasons why productivity of the primary producers is
usually higher in estuaries that are in pelagic zones. Correct Answer-1.
There is more sunlight, allowing for more productivity.
2. Higher nutrient levels.
If you were cultivating algae to be used as food for tilapia aquaculture
what would you think would be the three most important abiotic factors
that would need to be focused on. Correct Answer-1. Temperature.
2. Light intensity.
3. Dissolved oxygen.
, Explain what is meant by a limiting nutrient. What would be an
excellent example of a limiting nutrient in the neretic zones and which
would be in pelagic zones. Correct Answer-The limiting nutrient would
be the compound that will have limited availability and thus control the
rate of producer productivity.
Neretic: Phosphates.
Pelagic: Iron Compounds.
Explain why viviparous propagules are an evolutionary advantage for
the red mangroves. Correct Answer-When the propagules drop into the
water already germinated, there is a much higher survival rate for.
Explain why up-welling coastal zones are very high in productivity.
Correct Answer-Cold water containing large amounts of oxygen (O2)
and nutrients rises, increasing productivity.
How do El Ninos impact up-welling coastal zones off California?
Describe two impacts on marine ecosystems from El Ninos. Correct
Answer-During an El Niño situation, when the warm current appears,
upwelling ceases and phytoplankton production is greatly diminished
and the fish move to colder regions farther south (or they starve).
Impacts on marine ecosystems:
1. Kelp forests suffer.
2. Many lifeforms starve.
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