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AICE marine science AS Level Exam Review paper 1, 2 (2024) Questions With Complete Solutions!!!
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AICE marine science AS Level Exam Review paper 1, 2 (2024) Questions With Complete Solutions!!!
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AICE marine science AS Level Exam Review paper 1, 2(2024) Questions With Complete Solutions!!!
scientific method (correct answer) 1. for valid experiments, data should be
collected numerous times (the more times, the more accurate)
2. only one variable (independent) should be changed in an experiment. All others
should be controlled. The deponent variable is dependent upon what you
changed-it will be what you are measuring in n experiment
3. quantitative results- numbers (qualitative=descriptive words)
outlining/designing an experiment (correct answer) -state amount of
containers e.g. 5 tanks of each
-state constants (at minimum 3) (light, salinity, amount of water, how often results
are calculated, amount f exposure/days etc.)
-what is the amount of independent variables used? pick a quantity suitable for
the experiment appropriate to the experiment
-state the duration of the entire experiment
-state the calculating results. most common is simple counting
-state repeat experimentation and calculate mean/average from all trials
describing results of an experiment (correct answer) -state the most with
reference to data
-state the least with reference to data
-manipulate data by finding range
creating or working with graphs (correct answer) -use the entire graph
-correctly label the x and y axis
,-use correct intervals. do not use breaks to begin at certain number. each interval
is equally spaced. use appropriate scale the divide the total number of spaces on
the graph by the range. this will give you your interval.
-when constructing a graph, make sure your scale is appropriate to show a
relationship-you may need to have values on the axis to the left and to the right
-plot all points correctly
-line of best fit
explain what would be needed to turn an experiment into a theory (correct
answer) -rigorous testing
-repeated testing by many/other scientist
-scientist get similar results but with the same conclusions no exception
symbiosis (correct answer) remember that aice looks at symbiosis and
mutualism one in the same. it is a close relationship between 2 different species
where both benefit. make sure you explain what both are getting/giving.
examples: coral and zooxanthellae; tube worms and chemo. bacteria
arrows in a food chain (correct answer) or food web represent: transfer
engery and biomass
-do not use the words "eats," instead, use consumes
predator/prey relationships (correct answer) remember that the number of
predators lags behind the number of prey organisms
succession (correct answer) tube worms, remember =, tevnia first, the they
are replaced by riftia
, extreme and unstable (correct answer) explain why extreme and unstable
environments have low biodiversity
first, define terms: extreme, unstable, and biodiversity
second, give examples of each environment with organism's adaptation to that
environment
extreme environments (correct answer) have a low ph, high temperature,
low oxygen and high salinity
-extreme environments have limited resources
-hydrothermal vents are an extreme environment
-example of an organism at a hydrothermal vent is chemosynthetic bacteria
unstable environments (correct answer) -sandy environments where there is
sand slippage; organisms are easily washed away
-organsims burrow to avoid being washed/swept away. they are also exposed to
air, so desiccation can occur. organisms must adapt.
high biodiversity (correct answer) areas of high biodiversity have a narrow
niches because if niches overlap, individuals will die out.
narrow niches=reduces overlap=reduces competition
niche (correct answer) an organisms role in its environment
-generalized- an organisms having a wide range of food and habitat
-specialized- an organism that has a narrow food requirement and lives in a
specific habitat
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