The average salinity of seawater is 35 0/00, which means 35
What is Parts Per Thousand
100
Marine organisms can be classified as ___ nekton, or benthos.
What is Plankton
100
the transfer of energy between algae and herbivores is about
What is 2%
100
which of the following is the most important factor affecting seawater density?
a. chemical weathering
b. solar radiation
c. temperature
d. latitude
What is temperature
100
which of the following is NOT an example of nekton?
a. squid
b. marine iguanas
c. tuna
d. diatoms
What is diatoms
200
the salt in seawater comes from Earth's interior and from the ___ of rocks
What is Chemical Weathering
200
Plankton include algae, animals, and bacteria that drift with ocean current, whereas ___ include all animals that move by swimming or by other means of propulsion.
What is nekton
200
when looking at the food web which level is most likely to survive
What is top carnivore in the food web
200
at least 80% of ocean water is included in the
a. deep zone
b. surface mixed zone
c. thermocline
d. transition zone
What is deep zone
200
which of the following processes does NOT decrease the salinity of seawater?
a. runoff
b. solar radiation
c. evaporation
d. weathering
What is weathering
300
the seawater, when the temperature ____, the density decreases
What is increase
300
Organisms that live on or in the ocean bottom are referred to as ___.
What is Benthos
300
main characteristic of life does not occur in the abyssal zone?
What is no photosynthesis occurs
300
Marine organisms can be classified according to
a. how they reproduce
b. their specific body parts
c. what they eat
d. where they live
What is where they live
300
The three layered structure of the open ocean does NOT exist
a. in middle latitudes
b. in high latitudes
c. in low latitudes
d. at the equator
What is high latitudes
400
the three main zones of the open ocean are the surface mixed zone, the ___ zone, and the deep zone.
What is Transition
400
Below about 100m in the lower ___ zone, there is still enough light for marine animals to avoid predators, find food, recognize their species, and locate mates
What is photic
400
Productivity in polar oceans is limited primarily by
What is availability of solar energy
400
one of the main differences between plankton and nekton is that plankton
a. cannot photosynthesize
b. drift with ocean currents
c. are much large than nekton
d. are unable to swim
What is drift with ocean currents
400
Which of the following characteristics is NOT used to divide the ocean into marine life zones?
a. availability of sunlight
b. distance from the shore
c. water depth
d. salinity
What is salinity
500
Of all the light energy absorbed by algae, about ___ percent is made available to the next trophic level.
What is 2
500
in the ___ there is extremely high water pressure, consistently low temperature, no sunlight, and sparse life.
What is abyssal
500
a region's photosynthetic productivity is influenced most significantly by
What is availability of nutrients and amount of solar radiation
500
where would you most likely find benthos organisms?
a. in the surface mixed zone
b. in the pycnocline
c. traveling in ocean currents
d. on or in the ocean bottom
What is on or in the ocean bottom
500
Because the photic zone is the part of the ocean into which sunlight penetrates, it includes all of the following marine life zones Except
a. the benthic zone
b. parts of the pelagic zone
c. the abyssal zone
d. all of the neritic zone