Biol 15N Marine Biology » Winter 2020 » Exam 3
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Biol 15N Marine Biology ] course for $25 USD.
Existing Quiz Clients Login here
Question #1
A coral atoll is:
A.
typically found as a mounded structure on a continental shelf
B.
a volcanic structure with abundant calcareous worms
C.
a type of coral commonly found on oceanic spreading centers
D.
typically found on a submerged volcano
Question #2
Euryhaline species:
A.
Tolerate only a narrow range of salinities
B.
Only tolerate small temperature changes
C.
Need less oxygen to survive
D.
Can survive broad changes in salinity
E.
Are less common in estuaries than stenohaline species
Question #3
All of the following are abiotic factors except:
A.
Light
B.
Temerature
C.
Predation
D.
Salinity
E.
Substrate
Question #4
The upper limit of rocky intertidal communities is typically determined by:
A.
Neither physical nor biological factors
B.
Both biological and physical factors
C.
Mostly biological factors
D.
Mostly physical factors
Question #5
Coral reefs formed on the edge of land masses close to the shore are called:
A.
atolls
B.
fringing reefs
C.
keys
D.
locks
E.
barrier reefs
Question #6
The primary function of the kelp pneumatocyst is to...
A.
provide CO2 for photosynthesis
B.
float blades toward the surface
C.
provide surface for epiphyte growth
D.
regulate gas exchange
Question #7
Approximately what percentage of energy in a particular trophic level is passed on to the next trophic level?
A.
5%
B.
10%
C.
2%
D.
15%
Question #8
Predation by sea stars on rocky shores ultimately results in:
A.
Less wave action
B.
Increase in the number of mussels
C.
More species overall
D.
Fewer species
E.
Decrease in the number of seaweeds
Question #9
The primary challenge for sandy beach organisms is/are:
A.
shifting sand
B.
salinity
C.
light
D.
tides
E.
food
Question #10
An association in which one organism benefits while the other is neither harmed nor helped is called a _____ association.
A.
episodic
B.
parasitic
C.
mutualistic
D.
symbiotic
E.
commensalistic
Question #11
Ahermatypic corals are those that:
A.
Are non-reef builders
B.
Always have a soft skeleton
C.
Have zooxanthellae
D.
Are scavengers
E.
Only live in temperate waters
Question #12
The loss of estuaries and mangrove forests is particularly serious since these ecosystems:
A.
Directly or indirectly provide food to many species
B.
Are among the most productive of all marine ecosystems
C.
All of the choices are true
D.
Provide habitats to many species
E.
Provide nesting or resting areas to many seabirds
Question #13
Amongst reef-building corals, zooxanthellae:
A.
Provide the coral with carbon dioxide
B.
Provide the coral with protection from herbivores
C.
Help in the deposition of the skeleton
D.
Provide the coral with protection from predators
E.
Release mucus and other chemicals
Question #14
The “splash zone” refers to:
A.
Regions of the lower tide zones where animals can retreat and remain wet at most times in the tidal cycle
B.
Intertidal zones where splashing of waves is magnified by the shape of the local rock formations
C.
The upper most area of the intertidal, not usually covered by the tides during most days, but that is “splashed” with sea water during high tides
D.
The region where crabs are usually found and “splash” around during feeding activities
E.
Tide pools in the upper intertidal where birds commonly bathe (seen from a distance as a “splash” environment)
Question #15
The herbivorous, or plant eating, organisms in a trophic structure belong to ____ level.
A.
primary consumer
B.
primary producer
C.
secondary consumer
D.
quaternary consumer
E.
tertiary consumer
Question #16
Coral, fish, invertebrates that spawns eggs and sperm into the water for eternal fertilization are often termed ________.
A.
sexual reproducers
B.
brooders
C.
broadcast spawners
D.
gamete spawners
Question #17
The greatest coral diversity is found in:
A.
the Galapagos
B.
the Indo-Pacific
C.
the Hawaiian Islands
D.
the Aleutian Islands
E.
the Caribbean
Question #18
Tidal bores in estuaries result from the effect of:
A.
High tides moving in
B.
The Coriolis effect
C.
Differences in water temperature as one moves inland
D.
Salt wedge moving toward the surface
E.
Freshwater moving from rivers
Question #19
An example of a keystone species is/are:
A.
turtles in the intertidal
B.
octopus in the lower intertidal
C.
salmon in estuaries
D.
otters in kelp forests
E.
barnacles in the intertidal
Question #20
The physical structure described as a “coral reef” is constructed by organisms that produce:
A.
strontium sulphate
B.
chitin
C.
calcium carbonate
D.
calcium bicarbonate
E.
silicate
Question #21
A strong clinging foot is a vital adaptation for protection from predators for the:
A.
squids
B.
tube snails
C.
mussels
D.
abalone
E.
scallops
Question #22
Which of the following adaptations of intertidal molluscs help them avoid desiccation (drying up)?
A.
evaporative cooling
B.
natal homing
C.
use of the operculum
D.
none of these
E.
aerial respiration
Question #23
The primary sediment-type found within an estuary is ________, which is comprised of ________ and ________.
A.
mud, silt, clay
B.
clay, silt, mud
C.
silt, clay, mud
Question #24
________ is defined as the greatest number of individuals that can be sustained by the available resources.
A.
An ecosystem's limit
B.
Carrying capacity
C.
Maximum capacity
D.
Steady state
Question #25
A ________ is a an estuary found in areas that once had glaciers near the sea.
A.
fjord
B.
drowned fiver valleys
C.
bar-build estuaries
D.
coastal plain estuaries
Question #26
Under stressful conditions, scleractinian corals can purge their _____ symbionts; a process known as _____.
A.
zooxanthellae, mortality
B.
dinoflagellate, bleaching
C.
fungal, mass spawning
D.
cyanobacteria, bleaching
Question #27
Rocky shores are divided into three primary areas known upper, middle, and lower intertidal zones. Animals in the _____ zone experience the most extreme environmental stress and must be adapted to these conditions if they are to survive.
A.
Upper
B.
Middle
C.
Lower
Question #28
Burrowing organisms that live in within the sediment of sandy and silty benthos are extrastitial fauna.
A.
FALSE
B.
TRUE
Question #29
________ competition occurs between two or more different species for a limited resource, whereas ________ competition is the struggle that occurs between organisms of the same species when resources are scarce.
A.
interspecific, intraspecific
B.
agonistic, true
C.
facilitative, agonistic
D.
intraspecific, interspecific
Question #30
Hermatypic corals produce _____ skeletons, and are the primary _____ of reefs.
A.
calcium carbonate, builders
B.
porous, inhabitants
C.
calcium-proteinaceous, producers
D.
thin, builders
Question #31
The process of converting nitrogen gas into an organic form that animals can use is called nitrogen fixation.
A.
FALSE
B.
TRUE
Question #32
An estuary is a transition zone where waters from ________ meets and mix with ________.
A.
ocean, brackish water
B.
rivers, seawater
C.
lakes, hyposaline pools
D.
creeks, inland waterways
Question #33
Dietary _____ can reduce competition but it may leave species vulnerable when resources are scarce.
A.
specialization
B.
partitioning
C.
generalization
D.
sharing
Question #34
The geologic period that began 2 million years ago where sea levels rose-and-fell several times, affecting coral reefs and estuaries.
A.
Protocene
B.
Pliocene
C.
Paleocene
D.
Pleistocene
Question #35
In the rocky intertidal and coral reefs ecosystems ______ can be a limiting resource.
A.
sexual partners
B.
space
C.
light
D.
food
Question #36
_______ is when an organism's genes are unchanged and the change is not passed on to the offspring.
A.
physiological acclimatization
B.
genetic acclimatization
C.
genetic adaptation
D.
physiological adaptation
Question #37
The global distribution of coral reefs in the ocean is MOST limited by what? (pick two),,
A.
salinity
B.
temperature
C.
light
D.
predation
E.
nutrients
F.
waves
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Biol 15N Marine Biology ] course for $25 USD.
Existing Quiz Clients Login here