oceanography exam 3--practice multiple choice questions Flashcards

Terms Definitions
e. all of the above
which of the following is not an advantage of being small?
a. greater resistance to sinking
b. greater efficiency at taking up nutrients
c. greater efficiency at expelling wastes
d. greater surface to volume ratio
e. all of the above
C. unavailability of nutrients
periods of low plant productivity in tropical regions are most commonly the result of
a. upwelling
b. deficient supply of solar radiation
c. unavailability of nutrients
d. low temps
e. strong thermocline development
C. deficient supply of solar radiation
periods of low plant productivity in polar regions are most commonly the result of ?
a. upwelling
b. unavailability of nutrients
c. deficient supply of solar radiation
d. strong thermocline development
e. low temperatures
D. benthic
The greatest number of different species in the ocean are found in the ________ environment.
a. pelagic
b. hadal
c. oceanic
d. benthic
Mariculture
Growing a marine organism in captivity
B. unidirectional
energy flow in an ecosystem is
a. cyclic
b. unidirectional
c. bidirectional
A. oxygen is removed from the photic zone by photosynthesizing organisms
which of the following statements is false:
a. oxygen is removed from photic zone by photosynthesizing organisms
b. carbon dioxide is removed from photic zone by photosynthesizing organisms
c. oxygen is consumed by respiration and the breakdown of organic matter in the photic zone
d. carbon dioxide is released by respiration and the breakdown of organic matter in the photic zone
B. photosynthesis
production of food using sunlight called:
a. chemosynthesis
b. photosynthesis
c. geosynthesis
d.biosynthesis
LONGER, ABSORBED, SHORTER, REFLECTED
the ocean is blue because light at mostly _________ wavelenghts is ___________ by water molecules, leaving light at mostly _________ to be _________ back at us.
A. blue plant (problem with b is that it is reflecting red and absorbing blue colors- meaning if it were at 10m it would be able to live but A is the only one that can live below 10m b/c it is absorbing red and reflecting blue colors)
which of the followin organisms cannot photosynthesize at water depths greater than 10m?
A. blue plant
B. red plant
c. oversaturated with respect to seawater
you travel to bottom of ocean (4km) fill bottle with seawater. shortly after return to ship, notice that there are bubbles forming in bottle. bubbles form b/c the gas in the seawater is now?
a. in equillibrium with the seawater
b. undersaturated with respect to seawater
c. oversaturated with respect to seawater?
1. towed net
2. filter
3. color scan satellite
rank ways of measuring productivity in ocean from most detailed/least efficient to least detailed/most efficient ?
e. all of the above
which of the following is not an advantage of being small?
a. greater resistance to sinking
b. greater efficiency at taking up nutrients
c. greater efficiency at expelling wastes
d. greater surface to volume ratio
e. all of the above
b. light
productivity in the polar seas is limited by?
a. nutrients
b. light
c. temperature
d. grazing
a. nutrients
productivity in the tropic seas limited by?
a. nutrients
b. light
c. temp
d. grazing
a. krill numbers increased
when the large baleen whales were moved from the antarctic what happened to food web?
a. krill numbers increased
b. penguin, squid and crab eater seal numbers increased
c. copepod numbers decreased
d. small baleen whale numbers increased
b. krill
what is the keystone species in the antarctic food web?
a. diatoms
b. krill
c. penguins
d. baleen whales
d. frazil ice
first ttype of sea ice to form as temps drop is called?
a. fast ice
b. pancake ice
c. iceberg
d. frazil ice
e. brash ice
E. high atmospheric CO2 concentrations
ocean acidification and calcium carbonate dissolution of the skeletons of organisms result from:
a. photosynthesis
b. global warming
c. overfishing
d. respiration
e. high atmospheric CO2 concentrations
c. 1970
what year were the most fish landed on georges bank?
a. 1910
b.1940
c. 1970
d.1990
b. photic zone
where would you expect to find high nutrients in the ocean?
a. photic zone
b. aphotic zone
nitrogen
what is the most limiting nutrient in the ocean?
phosphorous
which nutrient limited to how much comes off land?
b. aphotic zone (because taking simple sugar and releasing it producing CO2--which then builds up in deep ocean)
photosynthesis and respiration--where would you find CO2 in the ocean? a. photic zone or b. aphotic zone?
upwelling
what is the only way to get nutrients/nitrogen up to surface?
maximum sustainable yield
largest catch that can be taken from a species stock over an indefinite period
exclusive economic zone
200 nautical miles
bykill or bycatch
non-target species caught
territorial waters
12 nautical miles
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