OCS FINAL EXAM- all possible exam questions 2023/2024
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OCS
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OCS
OCS FINAL EXAM- all possible exam questions 2023/2024
Larval Black-fin tuna contain 0.01 ng/g mercury while juvenile black-fin tuna contain 0.04 ng/g mercury and adult black-fin tuna contain 0.12 ng/g mercury. this is an example of..
bioaccumulation
A copeod contains 0.0001 ng/g mercury. Ancho...
OCS FINAL EXAM- all possible exam
questions 2023/2024
Larval Black-fin tuna contain 0.01 ng/g mercury while juvenile black-fin tuna
contain 0.04 ng/g mercury and adult black-fin tuna contain 0.12 ng/g mercury. this
is an example of..
bioaccumulation
A copeod contains 0.0001 ng/g mercury. Anchovies, which eat this type of
copepod contain 0.0012 ng/g mercury. This is an example...
biomagnification
The later that ice cover in the arctic ocean breaks up, the ______ the chances are
that a female will deliver two cub.
greater
A fish with blood salinity of 12 psu is swimming in water with a salinity of 22 psu.
This fish will tend to _____ water
lose water via the gills and will drink seawater while excreting excess salts.
A fish with a blood salinity of 12 psu is swimming in water with a salinity of 4 psu.
This fish well tend to ____ water.
gain
The accumulation of material or a toxin in a progressively higher trophic levels is
called.....
biomagnification
An animal whose internal salinity fluctuates in relation to the salinity of water is
called...
osmoconformer
where is the longest fjord in the world?
greenland
In terms of salinity, turbid water is generally an indication that the water contains
_____ salt then clearer water.
less
An animal whose excess metabolic heat is lost to the environment and whose
body temperature is the same as the surrounding water is classified as.....
ectotherm or poikilotherm
a whale with a ______ surface area to volume ratio will be more tolerant of deep
dives.
small
an anatomical structure that recycles heat to the core of an animal to prevent loss
via extremities is called a _____ exchanger
countercurrent
if arctic sea ice breaks up later than normal, polar bears will have a _____ chance
of producing and raising more cups.
greater
In an oligotrophic ocean, phytoplankton with a _____ surface area to volume ratio
will be better adapted.
small
, A pathway that recycles dissolved organic carbon via bacteria and
microzooplankton is called the____
microbial loop
The most abundant life-like particles in the oceans are.....
viruses
phytoplankton which have case called frustule that is made of silica dioxide are
called.....
diatoms
....... are the group of phytoplankton that includes species that are capable of
producing bioluminescence and other species that can produce harmful algal
blooms known as red tides.
dinoflagellets
Phytoplankton that screen the interior of their cell with reflective plates made of
calcium carbonate are called.....
coccolithophores
In low nutrient (oligotrophic) waters, phytoplankton with a high ......:..... ratio will
be able to secure the nutrients they require.
surface area:volume
.... acid is a toxin produced by phytoplankton called .....
domoic; diatoms
production of light by ..... is a strategy to illuminate their .....
dinoflagellates; predators
the simplest, multicellular organisms are the.....
sponges
Sea anemones and corals belong to phylum .....
cnidaria
identify one radically symmetrical phylum that is entirely marine and which
propels itself by the synchronized beating of 8 bands of cilia.
ctenophores
The simplest, bilaterally-symmetrical organisms are the....
platyhelminths
Platyhelminths contains two parasitic and one free living classes. Name one of
the parasitic classes:
cestoda or trematoda
The most abundant group of marine annelids are the .....
polychaete
The mollusks contain a class that consist of two shells arranged so that they
enclose the animal inside. Give example of animal.
clam, oyster, mussel, or scallop
A snail, a conch, and a whelk are all examples of a class of mollusks that have a
spiral shaped shell and a muscular foot. members of this class are called....
gastropods
The most intelligent class of mollusks are called the...
cephalopods
What is the primary means of defense used by cuttlefish?
camouflage
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