EOSC 315 FINAL EXAM REAL EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) ALREADY PASSED
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Module
EOSC 315
Institution
EOSC 315
EOSC 315 FINAL EXAM REAL EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) ALREADY PASSED
Why do deep sea benthic fish exhibit gigantism compared to pelagic deep sea fish?
a) To allow for more successful finding of a mate
b) To combat the colder temperatures
c) Allow for larger energy reser...
EOSC 315 FINAL EXAM REAL EXAM
QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS)
ALREADY PASSED
Why do deep sea benthic fish exhibit gigantism compared to pelagic deep sea fish?
a) To allow for more successful finding of a mate
b) To combat the colder temperatures
c) Allow for larger energy reserves.
d) Due to the much larger amount of available food.
e) To avoid predation - Answer- c) Allow for larger energy reserves.
When a whale dies and falls to the bottom of the ocean, which of the following
organisms are one of the first to feed on the dead carcass?
hagfish
diatoms
deep sea eels
sulphur loving bacteria
juvenile clams - Answer- hagfish
Primary production below the epipelagic is ______________________.
a) non-existent as light levels are either too low or completely absent at depth
b) low due to predation
c) only occurring among the chemoautotrophic bacteria
d) variable depending on the depth of the mixed layer
e) low among the phytoplankton due to the low light - Answer- c) only occurring among
the chemoautotrophic bacteria
The average depth of the global ocean is 3688 m. What zone of the ocean
encompasses this depth?
bentic
bathypelagic
abyssalpelagic
mesopelagic
epipelagic - Answer- bathypelagic
Why do many deep sea fish (below mesopelagic) still have eyes?
to avoid large land masses and other obstacles
,to hunt prey
to be able to detect the location of the surface
to avoid large predators
to detect bioluminescence - Answer- to detect bioluminescence
All the following are true with respect to the properties of light in seawater EXCEPT .
a) The photic zone is deeper in the open ocean than in most coastal regions.
b) Increased plankton biomass and sediment concentrations will change the color of the
surface water towards green and or yellow.
c) The ocean appears blue because the blue wavelength is reflected off the oceans
before it can
penetrate below the surface.
d) Red does not penetrate below the ocean's surface very deeply.
e) The color of tropical oceans including coral reefs tends to be blue due to the lack of
plankton biomass in the water. - Answer- c) The ocean appears blue because the blue
wavelength is reflected off the oceans before it can
Which of the following is true about diatoms?
a) They are made of silica shells
b) They on average get smaller as they go through asexual reproduction.
c) Diatoms can actively maintain their position in the water column.
d) They are eukaryotic and single celled.
e) All of the above are true. - Answer- e) All of the above are true.
Which of the following are not all photosynthetic?
a) Dinoflagellates
b) Coccolithophores
c) Red Algae
d) Cyanobacteria
e) Kelp - Answer- a) Dinoflagellates
Which of the following does NOT apply to zooplankton?
a) Some examples are single celled
b) Some examples are multicellular
c) The carnivores are important primary consumers in most food webs.
d) Their numbers can affect rates of primary productivity. - Answer- c) The carnivores
are important primary consumers in most food webs.
Which of the following is true about Chondrichthyes?
a) They have gill covers to decrease their drag in the water
b) Many are herbivorous
c) They have swim bladders for buoyancy control
d) They are made up of cartilage, making them negatively buoyant.
e) All fertilization is external. - Answer- d) They are made up of cartilage, making them
negatively buoyant.
, Infauna organisms inhabiting sandy shore environments must cope with ___________
and tend to be ____________due to the food availability in their specific ecosystem.
a) High waves; hard shelled
b) Low oxygen; detritivores
c) High salinity; good hunters
d) a non-changing environment; poisonous
e) high UV rays; photosynthetic - Answer- b) Low oxygen; detritivores
Coral reef ecosystems in the tropics rely heavily on _____________ between
____________ and ____________ to survive and thrive.
a) Predation; sharks; reef fish
b) Parasitism; crown of thorns seastar; soft corals
c) Heterotrophy; zooplankton; all types of corals
d) Symbiosis; dinoflagellates; hard corals
e) Coral poison; hard coral; soft corals - Answer- d) Symbiosis; dinoflagellates; hard
corals
Two flagella and a cell wall made of cellulose are characteristic of .
a) Diatoms
b) Dinoflagellates
c) Cyanobacteria
d) Coccolithophores
e) Copepods - Answer- b) Dinoflagellates
Which of the following is a 'flowering plant'?
a) Eelgrass
b) Kelp
c) Zooxanthellae
d) Diatoms
e) All of the above - Answer- a) Eelgrass
The term 'KELP' refers to a sub-group of
a) Red algae
b) Brown algae
c) Green algae
d) Eel grass
e) Blue-green algae - Answer- b) Brown algae
An example of a jawless fish is the .
a) Hagfish
b) Shark
c) Ray
d) Flounder
e) Parrot fish - Answer- a) Hagfish
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